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The Effect of the COVID-19 Pandemic on Environmental Health (Two Sides of the Same Coin): A Systematic Review

Published online by Cambridge University Press:  02 October 2023

Mehrdad Farrokhi
Affiliation:
Health in Emergency and Disaster Research Center, Social Health Research Institute, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
Hamidreza Khankeh
Affiliation:
Health in Emergency and Disaster Research Center, Social Health Research Institute, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran Department of Clinical Science and Education, Karolinska Institute, Stockholm, Sweden
Mohammad Saatchi
Affiliation:
Health in Emergency and Disaster Research Center, Social Health Research Institute, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
Zoya Hadinejad
Affiliation:
Health in Emergency and Disaster Research Center, Social Health Research Institute, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran Department of Education and Research, Emergency Medical Sciences, Mazandaran University of Medical Sciences, Sari, Iran
Sadegh Ahmadi-Mazhin
Affiliation:
Department of Public Health, School of Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
Yazdan Mohsenzadeh
Affiliation:
Health in Emergency and Disaster Research Center, Social Health Research Institute, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran Department of Nurse Sciences, Faculty of Emergency Medicine, Alborz University of Medical Sciences, Karaj, Iran
Zahra Mehraein Nazdik
Affiliation:
Health in Emergency and Disaster Research Center, Social Health Research Institute, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
Javad Shojafard
Affiliation:
Health in Emergency and Disaster Research Center, Social Health Research Institute, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
Negar Pourvakhshoori
Affiliation:
Department of Nursing, School of Nursing and Midwifery, Guilan University of Medical Sciences, Rasht, Iran
Shokoufeh Ahmadi*
Affiliation:
Health in Emergency and Disaster Research Center, Social Health Research Institute, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
*
Corresponding author: Shokoufeh Ahmadi; Email: [email protected].
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Abstract

Background:

The outbreak of the COVID-19 pandemic in late 2019 has led to many changes such as reduced human activities and effects on the environment. There is no big picture of the effects of pandemics on the environment using related evidence.

Objectives:

This study was conducted to investigate the effect of the COVID-19 pandemic on environmental health.

Methods:

A systematic search of English language studies was performed in major electronic databases; Web of Science, PubMed, Scopus, and Google scholar web search engine from December 2019 to February 2022. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) standard guidelines were used to follow up the review process. finally 58 articles entered the review procedure.

Results:

The results of indicate a significant reduction of air pollutants and improved air quality. It improved the water quality of some rivers, canals, and seas during the lockdown of the COVID-19 pandemic. The effects of this disease on the environment cannot be fully described yet.

Conclusion:

In the short term, the amount of air, water, and coastal pollution has been reduced. few studies have examined the effects of pandemics on the environment in the long run, which paves the way for more researches.

Type
Systematic Review
Copyright
© The Author(s), 2023. Published by Cambridge University Press on behalf of Society for Disaster Medicine and Public Health

On February 11, 2020, the World Health Organization identified the causative agent as the coronavirus and named it coronavirus disease (COVID-19). Reference Hoehl, Rabenau, Berger, Kortenbusch, Cinatl and Bojkova1,2 As of May 31, 2023, more than 767 364 million people have been infected with the disease and nearly 7 million deaths have been recorded. In addition to endangering the lives of millions of people worldwide and a variety of social and economic consequences, its direct and indirect effects on the environment have also been discussed. 3

Negative effects related to human activities in the environment include global warming, urban sprawl, and accelerated species extinction. The view that humans play a major role in threatening species and ecosystems suggests that global human quarantine to reduce COVID-19 health hazards may reduce human impact and result in positive environmental responses. Indeed, initial reports indicate that the restrictions have led to an immediate reduction in air, land, and water travel, with similar reductions in industry, commercial exploitation of natural resources and production, and lower levels of PM10, NO2, CO2, SO2, and noise pollution.

However, a more comprehensive examination of the links between human activities, species, and ecosystems acknowledges the role of humans as conservationists, who participate in environmental protection research, biodiversity monitoring, habitat restoration, and wildlife-related executive activities. Indeed, COVID-19 global human quarantines have disrupted conservation, research, and policy processes to improve the global environment and biodiversity. The quarantine has also created economic insecurity in rural areas, which may pose a threat to biodiversity as humans seek to earn a living through illegal hunting and fishing. Reducing ecotourism in and around national parks and other protected areas has reduced funding for hunting restrictions and invasive species management programs. In general, there is a combination of positive and negative effects of lockdown following an epidemic on nature, which has the potential to lead to chain reactions that in turn affect wildlife and nature conservation. However, the effect of an issue such as lockdown requires more than several years of evaluation, and with the availability of data and the emergence of persistent epidemic effects, the response is being mapped around the world. Reference Bates, Primack and Biggar4,Reference Bates, Primack, Moraga and Duarte5

As mentioned, COVID-19 is one of the emerging infectious diseases that, along with the increase in human population, has increasingly disrupted natural ecosystems. 6 The outbreak of COVID-19 has caused concern around the world and changed the way people live. This change in human lifestyle has brought advantages and disadvantages to the environment, which necessitates research on these effects focusing on the presence and evolution of the COVID-19 pandemic in water, soil, and other environmental factors, as well as providing solutions to improve the environment. Despite the positive effects of coronavirus on the environment such as improving air quality, cleaning beaches, and reducing noise pollution, there are primary and secondary negative aspects such as excessive water consumption, reduced waste recycling, and increased organic and inorganic waste that lead to air, water, and land pollution. Policy-makers’ responses to the epidemic have also had profound effects on the environment. These effects include a combination of aggravating and improving factors of environmental pollution. Reference Sunyer, Dadvand and Foraster7 Since the positive and negative effects of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) on the environment are not clear, this research aims to review the published articles examining the effects of the COVID-19 pandemic on environmental health.

Material and Methods

A systematic review was conducted to investigate the association between the COVID-19 pandemic with air quality, water resources, and the environment. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) standard guidelines were used to follow up the review process and report findings. Reference Moher, Shamseer and Clarke8

Search Strategy and Selection Criteria

This review focused on studies about environmental pollution and or environmental impact that were published in English language journals up to the end of February 2022. The databases of Web of Science, PubMed, and Scopus were searched for medical subject headings (MeSH) and relevant key words, including “Environment,” “environmental pollution,” “Environmental Impact,” “COVID-19,” “COVID-19 virus,” “coronavirus disease 2019,” “SARS-CoV-2,” “pandemic,” and “outbreak.” They were used in isolation or combination through the Boolean method.

Inclusion and exclusion criteria

All English-language articles published in the world on air quality, water, environment, or a combination of these indicators and COVID-19 that were of high quality entered the study.

Exclusion criteria included articles of low quality, and studies conducted on other infectious diseases were excluded from the study. Those articles published in non-English language were also excluded. Additionally, meta-analysis, case reports, or series of cases were excluded, as well.

Quality assessment

The quality of the articles was assessed using the Strobe checklist (Strengthening the Reporting of Observational Studies in Epidemiology). This checklist has 6 scales, including: title, abstract, introduction, methods, results, and discussion. Some of these scales have subscales, resulting in a total of 32 subscales. Therefore, the maximum score that can be captured from the assessment using the checklist is 32, considering the score of 16 as the cutoff point. Reference Salari, Mohammadi and Vaisi-Raygani9 In this study, an acceptable score of 16 was considered. Scores 16–24 were medium, and scores greater than 24 (high quality) were considered.

Screening and Data Extraction

The search results were imported into the Mendeley software and duplicate titles were deleted. Selected studies were entered into abstract reading and were checked against the inclusion criteria, of which the most relevant studies were selected for independent full-text reading by 2 researchers (SD, JB) and a third person as the expert-epidemiologist checked the result. Reasons for the rejection of studies were mentioned and in case of disagreement between the researchers, the perspective of a third researcher was sought. A checklist was used to extract data from the selected studies in terms of the sample size, study location, study year, type of study, COVID-19 pandemic, environmental pollution, and/or environmental impact.

Selection of articles

By searching databases, 264 studies were extracted. Initially, the articles were entered into Mendeley software and after an initial review, 27 articles were removed from the study due to duplication. Then, by reviewing the titles and abstracts of articles, 5 articles were excluded due to not corresponding with inclusion criteria and 169 articles were removed due to irrelevance, and after reviewing the full text of articles, 5 articles were excluded due to lack of the required information. Finally, 58 articles met the inclusion criteria and entered the process of systematic review (Figure 1).

Figure 1. In total, 58 articles met the inclusion criteria and entered the process of systematic review.

Findings and Discussion

Of the total 58 studies presented, 26% of the articles worldwide reported their results, and about 28% of these studies were dedicated to India. About 69% of the articles were published in 2020, according to the time of publication (Figure 2).

Figure 2. Number of articles published by year.

Among the findings of this study, out of a total of 58 articles, 47 studies referred to the impact of positive aspects of the COVID-19 pandemic on water, air, and environmental quality, and the remaining 11 articles simultaneously examined the positive and negative effects of this disease (Table 1).

Table 1. General characteristics of the studied articles that were eligible for the review

AAI, absorbing aerosol index; CO, carbon monoxide; and GHG, greenhouse gas.

In total, 62% of the studies examined only air quality variables such as NO2, NO, CO, CO2, PM10, and PM2.5 Reference Wang and Su10,Reference Chakraborty and Maity12,Reference Abdullah, Mansor and Napi20,Reference Muhammad, Long and Salman22,Reference Srivastava, Kumar and Bauddh35,Reference Gupta, Tomar and Kumar40 ; 15.5% Reference Selvam, Jesuraja and Venkatramanan34,Reference Karunanidhi, Aravinthasamy and Deepali41,Reference Chakraborty, Roy and Bera43,Reference Najah, Teo and Chow50 examined water quality variables; 10.5% Reference Zambrano-Monserrate, Ruano and Sanchez-Alcalde11,Reference Barcelo15,Reference Kafeel, Ansari, Khan and Owens17,Reference Mukherjee, Babu and Ghosh33,Reference Mousazadeh, Paital and Naghdali44 probed both climate quality indicators; and 12% Reference Saadat, Rawtani and Hussain13,Reference Cheval, Adamescu and Georgiadis14,Reference Lal, Kumar and Kumar16,Reference Shakil, Munim, Tasnia and Sarowar18,Reference Bar42 assessed the overall effects of COVID-19 pandemic on the environment. Due to the emergence of this disease, there are still many unknown aspects, but the main research in this field can be divided into 3 parts: the impact of the pandemic on air quality, water quality, and other environmental resources. These articles have studied positive or negative, or both (+ and-), aspects of the pandemic.

Effect of the COVID-19 Pandemic on Air Quality

The results of studies in this regard indicate a significant reduction in air pollutants and improved air quality in the short lockdowns and national quarantines of the COVID-19 pandemic. Reference Wang and Su10,Reference Zambrano-Monserrate, Ruano and Sanchez-Alcalde11,Reference Saadat, Rawtani and Hussain13,Reference Lal, Kumar and Kumar16Reference Shakil, Munim, Tasnia and Sarowar18,Reference Chakraborty, Roy and Bera43 Air pollutants, such as emissions of NO2 and carbon dioxide (CO2), were significantly reduced due to industrial shutdowns and reduced worldwide transportation. Reference Lokhandwala and Gautam28 Also, the amount of greenhouse gases has decreased significantly in the short term. Reference Wang and Su10,Reference Zambrano-Monserrate, Ruano and Sanchez-Alcalde11 In the study of Muhammad et al., air pollution was reduced by 30% and the level of mobility was reduced by about 90%. Reference Muhammad, Long and Salman22 Collivignarelli reported a significant decrease in NO2 concentration due to reduced traffic in different cities: in London from 71.1-80.8%, in Milan from 8.6-42.4%, and in Paris from 65.7-79.8%, respectively. Reference Collivignarelli, De Rose and Abbà23 In their study of Southeast Asia, Kanniah reported that levels of PM10: 26-31%, PM2.5: 22-32%, NO2: 63-64%, SO2: 9-20%, and CO: 25-31% have decreased. Reference Kanniah, Kamarul Zaman, Kaskaoutis and Latif24 By analyzing air quality before and after 21 days of lockdown in India, Srivastava showed that these restrictions had major effects on reducing the levels of NO2, SO2, CO, and PM2.5. Reference Srivastava, Kumar and Bauddh35 During the COVID-19 pandemic, global demand for coal fuel in March and April 2020 decreased by 8% compared to the same time in 2019. In terms of emissions, the lockdown has reduced nitrogen oxide emissions by 20 to 30% in China, Italy, France, and Spain and by 77.3% in Sao Paulo, Brazil. Emissions of nitrogen oxides in India decreased between 20 and 77% and in different cities this reduction varied between 16 and 67%. Some studies have reported a reduction in particulate matter from 5–15% in Western Europe to 200% in New Delhi, which in turn has increased air quality in an unprecedented way in recent times. In some areas, such as New York, CO2 emissions have been reduced by 5–10%. Reference Menut, Bessagnet and Siour46 The air quality index in Baghdad improved by 13% compared to before the quarantine period and NO2 emissions decreased by 35–40% compared to before. Reference Hashim, Al-Naseri, Al-Maliki and Al-Ansari31

Despite what has been said, studies have shown that the reduction in pollutants is short-lived and the level of PM2.5 has not changed. Reference Bekbulat, Apte and Millet25 The findings do not support a reduction in greenhouse gases in the long run, because, after the cancelation of the national holiday, the start of economic activities, increased energy consumption, and subsequent increase in traffic, greenhouse gas emissions have increased again. Reference Wang and Su10 A study by Bekbulat in the United States found that PM 2.5 was reported to be 1–30% higher than expected during home quarantine and that shortfalls in O3, NO2, and CO levels were short-lived after lockdown and PM2.5 did not change. Reference Bekbulat, Apte and Millet25 According to the results of studies by Lal, Wang, Barchelo, and Zambrano, air pollution improves in the short term after closures and its long-term effects need further investigation. Reference Wang and Su10,Reference Zambrano-Monserrate, Ruano and Sanchez-Alcalde11,Reference Barcelo15,Reference Lal, Kumar and Kumar16

Effect of the COVID-19 Pandemic on Water Quality

Findings from some studies have shown that the lockdown and COVID-19-induced quarantine have improved the water quality of some rivers, canals, and seas, and the pandemic has had beneficial effects on surface water quality in some areas. In total, 34% of the articles mentioned an increase in water quality indicators, its transparency, and an increase in the amount of dissolved oxygen in water. Reference Saadat, Rawtani and Hussain13,Reference Kafeel, Ansari, Khan and Owens17,Reference Shakil, Munim, Tasnia and Sarowar18,Reference Rupani, Nilashi and Abumalloh27,Reference Selvam, Jesuraja and Venkatramanan34,Reference Karunanidhi, Aravinthasamy and Deepali41,Reference Chakraborty, Roy and Bera43

In Selvam’s study, a mirrored reduction in industrial waste was reported in industrial waste following the COVID-19 pandemic, and coliforms were reduced following the lockdown, COVID-19-induced quarantine, and closure of industrial activities, including fisheries. In addition, analytical factors showed better water quality. A significant decrease was observed in AS: 51.3%, Se: 42%, Fe: 60%, Pb: 50%, and NO3: 56%. Total coliform and fecal coliform were estimated to be 52% and 48%, respectively. Reference Selvam, Jesuraja and Venkatramanan34 In another study by Chakraborty in India, the heavy physical and chemical elements were beyond the standard in the pre-lockdown period. Cations and anions, including Mg, Ca, K, Na, NO3, SO4, Cl, and F, were observed in the lockdown period. Examination of water quality in the pre-lockdown period and COVID-19-induced quarantine showed that 100% of the water was highly polluted, and during the outbreak of COVID-19 disease and restrictions, about 90.90% of the samples were upgraded to good quality and 9.10% of the samples were moderately infected. Reference Chakraborty, Roy and Bera43 In some studies, a decrease in water turbidity and suspended particles was also reported during the pandemic. Reference Yunus, Masago and Hijioka49,Reference Patel, Mondal and Ghosh51 In Karunanidhi’s study in India, fluoride concentration decreased by 17%, and water pollution by nitrates decreased by 32.4%. Reference Karunanidhi, Aravinthasamy and Deepali41 Another study reported an improvement in surface water quality at Vembanad Lake, India, showing that suspended particulate matter (SPM) concentrations decreased by an average of 15.9% compared to last year. Reference Yunus, Masago and Hijioka49

In contrast, in some studies, the content of Cr, Ca, Zn, and Cd was similar to before and fluoride did not show any change. E. coli and fecal streptococci did not change significantly in the waters of industrial coastal cities. Reference Selvam, Jesuraja and Venkatramanan34 In a post-peak study in China, the re-reduction of water quality parameters and intensity of fluorescent components were recorded. Reference Shen, Liu and Lv53 In the study conducted by Patel, the amount of changes in water quality was reported to be variable, and the need for more attention to increase domestic wastewater production during the disease and its impact on receiving water sources such as rivers was highlighted. Reference Patel, Mondal and Ghosh51 In Bar’s study, it was reported that during the lockdown and COVID-19-induced quarantine, the use of a variety of means of transport on the river, such as motor boats and steamboats, was restricted. Some people in East Asia are economically dependent on river fishing. During this period, economic activities in rivers, including fisheries, stopped significantly. Reference Mukherjee, Babu and Ghosh33 Overall, water quality worldwide has improved, Reference Saadat, Rawtani and Hussain13,Reference Cheval, Adamescu and Georgiadis14 water pollution has been reduced, and surface and groundwater quality has been improved following the COVID-19 pandemic. Reference Saadat, Rawtani and Hussain13,Reference Cheval, Adamescu and Georgiadis14,Reference Shakil, Munim, Tasnia and Sarowar18,Reference Rupani, Nilashi and Abumalloh27,Reference Mukherjee, Babu and Ghosh33,Reference Karunanidhi, Aravinthasamy and Deepali41

The Effect of the COVID-19 Pandemic on the Environment

The effects of this disease on the environment cannot yet be fully described. However, it seems that with the outbreak of the COVID-19 pandemic and the closures that have occurred in different parts of the world, especially in industrialized countries, the amount of air, water, and coastal pollution has decreased. Reference Wang and Su10Reference Cheval, Adamescu and Georgiadis14 The results of some studies indicate that noise pollution has decreased with the onset of the lockdown and COVID-19-induced quarantine. Reference Zambrano-Monserrate, Ruano and Sanchez-Alcalde11,Reference Shakil, Munim, Tasnia and Sarowar18,Reference Bar42 In Bar’s study, noise pollution was reported to be significantly below 60 db. Reference Bar42 The quality of coastlines has improved, but household and medical waste has increased, and this increase in non-recyclable waste and medical waste leads to environmental and water pollution. For example, masks are used for a short time and usually daily. Reference Zambrano-Monserrate, Ruano and Sanchez-Alcalde11,Reference Saadat, Rawtani and Hussain13 Their contamination is palpable after the outbreak of COVID-19. These contaminants have entered the living environment of animals on land and at sea, which will have consequences such as death and disease for them. Reference Saadat, Rawtani and Hussain13 On the other hand, the resumption of activities and efforts to compensate for the lockdown and COVID-19-induced quarantine have different effects, which highlight the need for more research to identify these effects in the long run. Reference Cheval, Adamescu and Georgiadis14

This study aimed to investigate the effect of the COVID-19 pandemic on air quality, water resources quality, and the environment. The findings of most studies in this regard have compared previous measures with the post-lockdown and COVID-19-induced quarantine period. In this regard, quarantines and restricting communications have been effective in reducing toxic gases such as nitrogen dioxide, aerosols, atmospheric ozone, and particulate matter and improving air quality.

In a systematic review by Silva et al. Reference Silva and Branco68 (2022), it was reported that air quality improved during quarantine compared to before the quarantine. According to the findings of this research, reductions between 9% and 60%, 21.4% and 61.6%, were reported for PM2.5, PM10, respectively. Studies have reported a reduction in pollutant concentrations during quarantine compared to the same period in previous years and even more robustly with historical data of more than 5 years. Reference Silva and Branco68 Based on the results of a systematic review by Bakola et al. (2022), several air pollutants, including NO2, NO, PM2.5, PM10, CO, carbon dioxide (CO2), benzene, black carbon, and air quality index (AQI)) related to the quarantine of COVID-19, showed a significant and strong decrease. Reference Bakola, Hernandez Carballo, Jelastopulu and Stuckler69

According to the results of a systematic review study by Faridi et al., Reference Faridi, Yousefian and Janjani70 in 2021, quarantine measures related to the COVID-19 epidemic significantly reduced the concentration of PM2.5, NO2, PM10, SO2, and CO globally. Apart from measuring pollutants at ground stations, studies using satellite data have confirmed the results obtained with ground-level measurements and found that AQI improved during the quarantine period. A higher decrease was observed mainly for industrial areas. Reference Gebeyehu, East, Wark and Islam71

Several mechanisms have been reported to significantly reduce pollutant levels: reducing people’s driving and public transportation, Reference Bakola, Hernandez Carballo, Jelastopulu and Stuckler69,Reference Gebeyehu, East, Wark and Islam71 reducing or stopping the activity of industries and factories, Reference Bakola, Hernandez Carballo, Jelastopulu and Stuckler69 and reducing energy consumption Reference Silva and Branco68 ; A remarkable point is that, in the case of some pollutants such as ozone, different results have been reported. Based on the results of the systematic review by Faridi et al. Reference Faridi, Yousefian and Janjani70 (2021), Silva et al. Reference Silva and Branco68 (2022), and Bakula et al. Reference Bakola, Hernandez Carballo, Jelastopulu and Stuckler69 (2022), O3 concentration has increased compared to the conditions before COVID-19. Various reasons for the increase in O3 have been reported: decrease in NO and increase in solar radiation, Reference Silva and Branco68 decrease in the titration of O3 by NOX due to a significant decrease in local emission sources of NOX, possible increase in solar activity level due to decrease in PM2.5, and increase in the number of Hydroperoxyl radicals (HO2) as a mediator to increase ozone production. Reference Gebeyehu, East, Wark and Islam71

However, the findings do not indicate a long-term reduction in these gases because industrial activity has increased significantly after the restrictions were reduced. The results of some studies also indicate that the reduction of air pollutants during the pandemic is temporary, and after the end of the imposed restrictions and the removal of quarantine regulations, we will see an increase in air pollutants again. In the systematic review study by Silva et al. (2022), the increase in pollutants in the post-quarantine period was also reported. Reference Silva and Branco68

On the other hand, a significant increase in household and medical waste has led to further environmental pollution. China Center for Energy and Clean Air Research reports that SARS-CoV-2 emission control methods, such as quarantines and travel bans, have reduced carbon emissions by 25%. Reference Zhang, Zhang, Lin, Feng, Fu and Wang72 The LIU’s study, published in May 2020, also found that global carbon emissions fell by 17% since quarantine in early April, which could reduce annual carbon emissions by up to 7%, the largest drop since World War II. Second, researchers attribute these reductions mainly to reduced use of transportation and industrial activities. Reference Liu, Ciais, Deng, Lei, Davis and Feng73

Following the application of traffic restrictions, the air pollution index decreased significantly and vehicle emissions such as sulfur dioxide and nitrogen dioxide were reduced, so the EU Air Pollution Monitoring Service reported the production of particulate matter by 20 to 30% and the reduction of sulfur dioxide and nitrogen dioxide emissions. Reference Kafeel, Ansari, Khan and Owens17

According to the results of the systematic review by Silva et al. Reference Silva and Branco68 (2022), the amount of nitrogen dioxide has decreased 30-66% during the COVID-19 pandemic, and in the systematic review by Faridi et al. Reference Faridi, Yousefian and Janjani70 (2021), this reduction was 18-96%.

Overall, the outbreak of the COVID-19 pandemic appears to have reduced air, water, and coastal pollution in the short term. This finding, in line with some other studies that have made it possible to compare atmospheric composition with and without the lockdown and COVID-19-induced quarantine, showed that the effect of lockdown was particularly important for several atmospheric components through the widespread reduction of traffic and industrial activity, which has been accompanied by a large decrease in NO2 concentration, a decrease in particulate matter (PM) and air pollutants. Reference Wang and Su10,Reference Lal, Kumar and Kumar16,Reference Abdullah, Mansor and Napi20,Reference Dantas, Siciliano and França21,Reference Rupani, Nilashi and Abumalloh27,Reference Rodríguez-Urrego and Rodríguez-Urrego36

According to satellite imagery, one of the positive effects of COVID-19 has been clearer waters after 1 month of the national COVID-19 pandemic-induced lockdowns and quarantines. Reference Khan, Shah and Shah19,Reference Chakraborty, Roy and Bera43,Reference Yunus, Masago and Hijioka49,Reference Patel, Mondal and Ghosh51

Based on the results of the systematic review by Jiang et al. Reference Jiang, Xu, Ye, Pahlow, Hu and Qu74 (2022), the improvement of the quality of coastal waters and the reduction of underwater pollution have been reported. It is noteworthy that COVID-19 has caused an increase in some environmental pollutants for several reasons. Due to the frequent washing of hands and the use of chemical detergents and the release of the resulting effluents, an increase in environmental pollution is expected. According to the results of a systematic review by Chirani et al. Reference Chirani, Kowsari, Teymourian and Ramakrishna75 (2021), during the COVID-19 epidemic, frequent and increasing use of handwashing products leads to environmental pollution. Furthermore, the increase in the use of personal protective equipment (PPE) such as masks and gloves has also caused an increase in the production of waste and the release of these wastes into the environment and increased environmental pollution, especially with microplastic particles. Reference Ammendolia, Saturno and Brooks76Reference Rakib, De-la-Torre and Pizarro-Ortega86 According to the results of a systematic review by Jiang et al. Reference Jiang, Xu, Ye, Pahlow, Hu and Qu74 (2022), the increase in medical waste related to COVID-19, such as PPE, leads to severe pollution that threatens the marine ecosystem and wildlife.

Travel bans and reduced boat traffic have led to sedimentation and reduced water turbidity, which have made the water clearer. The canals of Venice are illustrative; in the pre-pandemic period, the TSM concentration averaged 3 g/m, but during the COVID-19 pandemic it dropped to 1.4 g/m, that is, a 50% reduction in concentration was observed. Reference Braga, Scarpa and Brando52 The unprecedented increase in the use of the mask and its release into the water and the environment has been one of the negative consequences of the COVID-19 pandemic. Other issues include the increasing use of detergents and their role in the state of wastewater.

Conclusion

With the outbreak of the COVID-19 pandemic and the closures that have occurred in various parts of the world, especially in industrialized countries, the amount of air, water, and coastal pollution has been reduced in the short term. Due to the emergence of the disease, the study period has been limited in some studies. For better conclusions about the effect of the COVID-19 pandemic on environmental health, we will need to examine the quality of water, air, and the environment in the long run. On the other hand, few studies have examined the effects of pandemics on the environment, and most of them have focused on air quality, which paves the way for research into the effects of pandemics on the environment. The effects of quarantine on the quality of the environment have been different.

Acknowledgments

Hereby, the Research Committee of University of Social Welfare and Rehabilitation Sciences, Tehran, Iran is sincerely appreciated.

Authors’ contributions

All authors contributed significantly to this paper. MF and HR KH contributed to the study design. MS and SH A created the search strategy. ZH and SAM and YM and ZMN completed the data extraction and analysis and critically appraised studies. JSH and NP drafted the manuscript. all authors contributed to its revision.

References

Hoehl, S, Rabenau, H, Berger, A, Kortenbusch, M, Cinatl, J, Bojkova, D, et al. Evidence of SARS-CoV-2 Infection in Returning Travelers from Wuhan, China. N Engl J Med. 2020 Mar 26;382(13):1278-1280.CrossRefGoogle ScholarPubMed
World Health Organization. WHO advice for international travel and trade in relation to the outbreak of pneumonia caused by a new coronavirus in China [Internet]. Wold Health Organization. 2020 [cited 2022 Jul 29]. p. 22-24. Available from: https://www.who.int/news-room/articles-detail/who-advice-for-international-travel-and-trade-in-relation-to-the-outbreak-of-pneumonia-caused-by-a-new-coronavirus-in-china Google Scholar
WHO. Weekly Epidemiological Update on COVID-19 [Internet]. World Health Organization. 2020 [cited 2022 Jul 29]. p. 1;4. Available from: https://www.who.int/publications/m/item/weekly-epidemiological-update-on-covid-19---11-january-2022 Google Scholar
Bates, AE, Primack, RB, Biggar, BS, et al. Global COVID-19 lockdown highlights humans as both threats and custodians of the environment. Biol Conserv. 2021;263:109175. https://www.sciencedirect.com/science/article/pii/S0006320721002275 CrossRefGoogle ScholarPubMed
Bates, AE, Primack, RB, Moraga, P, Duarte, CM. COVID-19 pandemic and associated lockdown as a “Global Human Confinement Experiment” to investigate biodiversity conservation. Biol Conserv. 2020;248:108665. https://linkinghub.elsevier.com/retrieve/pii/S0006320720307230 CrossRefGoogle ScholarPubMed
Preventing the Next Pandemic: Zoonotic Diseases and How to Break the Chain of Transmission. UN Environment Programme (UNEP-ILRI). Published 2020. Accessed February 6, 2022. https://www.unep.org/resources/report/preventing-future-zoonotic-disease-outbreaks-protecting-environment-animals-and%0Ahttps://www.unenvironment.org/resources/report/preventing-future-zoonotic-disease-outbreaks-protecting-environment-animals-and Google Scholar
Sunyer, J, Dadvand, P, Foraster, M, et al. Environment and the COVID-19 pandemic. Environ Res. 2021;195:110819. https://www.ncbi.nlm.nih.gov/pmc/articles/pmc7845501/ CrossRefGoogle ScholarPubMed
Moher, D, Shamseer, L, Clarke, M, et al. Preferred reporting items for systematic review and meta-analysis protocols (PRISMA-P) 2015 statement. Syst Rev. 2015;4(1):1. https://systematicreviewsjournal.biomedcentral.com/articles/10.1186/2046-4053-4-1 CrossRefGoogle ScholarPubMed
Salari, N, Mohammadi, M, Vaisi-Raygani, A, et al. The prevalence of severe depression in Iranian older adult: a meta-analysis and meta-regression. BMC Geriatr. 2020;20(1):1-8.CrossRefGoogle ScholarPubMed
Wang, Q, Su, M. A preliminary assessment of the impact of COVID-19 on environment—a case study of China. Sci Total Environ. 2020;728. https://www.sciencedirect.com/science/article/pii/S0048969720324323?casa_token=AK6uRlpmhY0AAAAA:u0f2xtlN595pCnEJnT0LVQwKUO9s9OS7kooIeQOAO3LSXNvrCGT397isMr1JGVbHUpxDE3nLZqI Google Scholar
Zambrano-Monserrate, MA, Ruano, MA, Sanchez-Alcalde, L. Indirect effects of COVID-19 on the environment. Sci Total Environ. 2020;728. https://www.sciencedirect.com/science/article/pii/S0048969720323305?casa_token=MgYI9dgRyqQAAAAA:-wniaUij0H5q31nWqZCS9MbNxesl53II3EnjdEQfN6TH7p1rp9tfFMjvMCLCZczwtd0K83KH9Jo Google Scholar
Chakraborty, I, Maity, P. COVID-19 outbreak: migration, effects on society, global environment and prevention. Sci Total Environ. 2020;728. https://www.sciencedirect.com/science/article/pii/S0048969720323998?casa_token=SUQDdGXpMdUAAAAA:GQcnCN9yMqIpCG5M7xuMM21uoJuSEnpUfeOEHd0FpqeThpYVRClTExzlz6Lw6SK-DDPGlfCAnvo CrossRefGoogle Scholar
Cheval, S, Adamescu, CM, Georgiadis, T, et al. Observed and potential impacts of the COVID-19 pandemic on the environment. Int J Environ Res Public Health. 2020;17(11):1-25. https://www.mdpi.com/739342 CrossRefGoogle ScholarPubMed
Barcelo, D. An environmental and health perspective for COVID-19 outbreak: meteorology and air quality influence, sewage epidemiology indicator, hospitals disinfection, drug therapies and recommendations. J Environ Chem Eng. 2020;8(4). https://www.sciencedirect.com/science/article/pii/S2213343720303547 CrossRefGoogle ScholarPubMed
Lal, P, Kumar, A, Kumar, S, et al. The dark cloud with a silver lining: assessing the impact of the SARS COVID-19 pandemic on the global environment. Sci Total Environ. 2020;732. https://www.sciencedirect.com/science/article/pii/S004896972032814X?casa_token=ZxYFIdCkzC4AAAAA:l4QLI8IWGw0Coyx13NfBq7KDumzalQDuWlAZIs4WcFKDwezWgpL725jgEbYbv4dKYuyceWSBAv4 Google Scholar
Kafeel, M, Ansari, A, Khan, NI, Owens, G. The environmental impact of COVID-19. Preprints. 2020. https://www.preprints.org/manuscript/202009.0334 Google Scholar
Shakil, MH, Munim, ZH, Tasnia, M, Sarowar, S. COVID-19 and the environment: a critical review and research agenda. Sci Total Environ. 2020;745. https://www.sciencedirect.com/science/article/pii/S0048969720345514 CrossRefGoogle Scholar
Khan, I, Shah, D, Shah, SS. COVID-19 pandemic and its positive impacts on environment: an updated review. Int J Environ Sci Technol. 2021;18(2):521-530. http://link.springer.com/10.1007/s13762-020-03021-3 CrossRefGoogle Scholar
Abdullah, S, Mansor, AA, Napi, NNLM, et al. Air quality status during 2020 Malaysia Movement Control Order (MCO) due to 2019 novel coronavirus (2019-nCoV) pandemic. Sci Total Environ. 2020;729. https://www.sciencedirect.com/science/article/pii/S0048969720325390?casa_token=AP5nMnKCkmkAAAAA:Yq0BASTy146KL2cCxheSOlh1MBcbswYchYfkCHQgr-EjI0FKzkCz0tWTb3zJYWQgXnJwWVN_USE CrossRefGoogle Scholar
Dantas, G, Siciliano, B, França, BB, et al. The impact of COVID-19 partial lockdown on the air quality of the city of Rio de Janeiro, Brazil. Sci Total Environ. 2020;729. https://www.sciencedirect.com/science/article/pii/S0048969720326024?casa_token=tkTA4O1u1RAAAAAA:5RFbK8EO4o3yxmFAXZVmdpmJ7W9xpCW5HRSMqjmWvC5YEeukqgm7BAWBC_wKYb3SSzjDYPp8ob0 Google Scholar
Muhammad, S, Long, X, Salman, M. COVID-19 pandemic and environmental pollution: a blessing in disguise? Sci Total Environ. 2020;728. https://www.sciencedirect.com/science/article/pii/S0048969720323378?casa_token=LnLlgZrbnZoAAAAA:rCrCeLRx_wSlGLlkoh4KFGtHIc1MuRE94mWtrJdFTBeknM1FMaLzbnwfc-2n0vFmMIIdA7XIYdI CrossRefGoogle Scholar
Collivignarelli, MC, De Rose, C, Abbà, A, et al. Analysis of lockdown for CoViD-19 impact on NO2 in London, Milan and Paris: what lesson can be learnt? Process Saf Environ Prot. 2021;146:952-960. https://www.sciencedirect.com/science/article/pii/S095758202031956X CrossRefGoogle ScholarPubMed
Kanniah, KD, Kamarul Zaman, NAF, Kaskaoutis, DG, Latif, MT. COVID-19’s impact on the atmospheric environment in the Southeast Asia region. Sci Total Environ. 2020;736. https://www.sciencedirect.com/science/article/pii/S0048969720331788?casa_token=cu5KJVdz0twAAAAA:ypkW9a2kn_6ASv_EdMrILdL0fsHL27nZUq7gE1W8J0QlC-0gDnuNqraZXTlpObwT9iEXvE1tuuk Google Scholar
Bekbulat, B, Apte, JS, Millet, DB, et al. Changes in criteria air pollution levels in the US before, during, and after COVID-19 stay-at-home orders: evidence from regulatory monitors. Sci Total Environ. 2021;769. https://www.sciencedirect.com/science/article/pii/S0048969720382267?casa_token=Rj--HDnFPIEAAAAA:22huBx57Hpn7eNY6cky9a-u5t0ZZuyi4ax1TQFy3vfInFkn7r1FWYXQyxjiQU7P5XUAArAW2i8M Google Scholar
Tobías, A, Carnerero, C, Reche, C, et al. Changes in air quality during the lockdown in Barcelona (Spain) one month into the SARS-CoV-2 epidemic. Sci Total Environ. 2020;726. https://www.sciencedirect.com/science/article/pii/S0048969720320532?casa_token=HwyNBzVSHhAAAAAA:HiE25wgVgA9TwxlGOxx5vDbdTQTUKZUQAdktGgaVeF58ElTJd_FkxLgqiDcDKeTUToo-Y9bCLQ0 CrossRefGoogle Scholar
Rupani, PF, Nilashi, M, Abumalloh, RA, et al. Coronavirus pandemic (COVID-19) and its natural environmental impacts. Int J Environ Sci Technol. 2020;17(11):4655-4666.CrossRefGoogle ScholarPubMed
Lokhandwala, S, Gautam, P. Indirect impact of COVID-19 on environment: a brief study in Indian context. Environ Res. 2020;188. https://www.sciencedirect.com/science/article/pii/S0013935120307027 CrossRefGoogle Scholar
Bera, B, Bhattacharjee, S, Shit, PK, et al. Significant impacts of COVID-19 lockdown on urban air pollution in Kolkata (India) and amelioration of environmental health. Environ Dev Sustain. 2021;23(5):6913-6940.CrossRefGoogle ScholarPubMed
Nakada, LYK, Urban, RC. COVID-19 pandemic: impacts on the air quality during the partial lockdown in São Paulo state, Brazil. Sci Total Environ. 2020;730. https://www.sciencedirect.com/science/article/pii/S0048969720326048?casa_token=7d0X4QtHefsAAAAA:yQXVO6CsMOEtJl7x0ZkTnx2ZupfEKdNLblPD6jajVgnrBSpYytZ_hY9JBdec6o0j_sklEahVeII Google Scholar
Hashim, BM, Al-Naseri, SK, Al-Maliki, A, Al-Ansari, N. Impact of COVID-19 lockdown on NO2, O3, PM2.5 and PM10 concentrations and assessing air quality changes in Baghdad, Iraq. Sci Total Environ. 2021;754. https://www.sciencedirect.com/science/article/pii/S0048969720355078?casa_token=UAfj6qlxWT4AAAAA:kKl-n13mHXPnKnrLObSU2f0yzonZN0rC9WwxB8NZY0PPbiYZLhBX5Pp5Ru5xhb58VQP6a-RfMiM CrossRefGoogle Scholar
Aydın, S, Nakiyingi, BA, Esmen, C, et al. Environmental impact of coronavirus (COVID-19) from Turkish perceptive. Environ Dev Sustain. 2021;23(5):7573-7580.CrossRefGoogle ScholarPubMed
Mukherjee, A, Babu, SS, Ghosh, S. Thinking about water and air to attain sustainable development goals during times of COVID-19 pandemic. J Earth Syst Sci. 2020;129:180.CrossRefGoogle Scholar
Selvam, S, Jesuraja, K, Venkatramanan, S, et al. Imprints of pandemic lockdown on subsurface water quality in the coastal industrial city of Tuticorin, South India: a revival perspective. Sci Total Environ. 2020;738. https://www.sciencedirect.com/science/article/pii/S0048969720333684?casa_token=xn_RIgEBfEUAAAAA:kPQEZMOcIGwKnZpnzVF8JYY_SxaqdOQlvk0U1F4aYcaQaiLozHtwe3InKsZbR1cCYu2KwOJmlsU Google Scholar
Srivastava, S, Kumar, A, Bauddh, K, et al. 21-day lockdown in India dramatically reduced air pollution indices in Lucknow and New Delhi, India. Bull Environ Contam Toxicol. 2020;105(1):9-17.CrossRefGoogle ScholarPubMed
Rodríguez-Urrego, D, Rodríguez-Urrego, L. Air quality during the COVID-19: PM2.5 analysis in the 50 most polluted capital cities in the world. Environ Pollut. 2020;266. https://www.sciencedirect.com/science/article/pii/S0269749120337635?casa_token=Es3k5FTCNWwAAAAA:nJfRxkwiVfBMUUQK3G9CE900tMEjr0KmgS9u6hzDgRiJfPVVN1p_eolGRSY7p3JNGvyJM8e9bqY CrossRefGoogle Scholar
Gautam, S. The influence of COVID-19 on air quality in India: a boon or inutile. Bull Environ Contam Toxicol. 2020;104(6):724-726.CrossRefGoogle ScholarPubMed
Seo, JH, Kim, JS, Yang, J, et al. Changes in air quality during the COVID-19 pandemic and associated health benefits in Korea. Appl Sci. 2020;10(23):1-15. https://www.mdpi.com/914760 CrossRefGoogle Scholar
Islam, MS, Chowdhury, TA. Effect of COVID-19 pandemic-induced lockdown (general holiday) on air quality of Dhaka City. Environ Monit Assess. 2021;193(6):343.CrossRefGoogle ScholarPubMed
Gupta, N, Tomar, A, Kumar, V. The effect of COVID-19 lockdown on the air environment in India. Glob J Environ Sci Manag. 2020;6:31-40. https://www.gjesm.net/article_39821.html Google Scholar
Karunanidhi, D, Aravinthasamy, P, Deepali, M, et al. Groundwater pollution and human health risks in an industrialized region of southern India: impacts of the COVID-19 lockdown and the monsoon seasonal cycles. Arch Environ Contam Toxicol. 2021;80(1):259-276.CrossRefGoogle Scholar
Bar, H. COVID-19 lockdown: animal life, ecosystem and atmospheric environment. Environ Dev Sustain. 2021;23(6):8161-8178.CrossRefGoogle ScholarPubMed
Chakraborty, B, Roy, S, Bera, A, et al. Cleaning the river Damodar (India): impact of COVID-19 lockdown on water quality and future rejuvenation strategies. Environ Dev Sustain. 2021;23(8):11975-11989.CrossRefGoogle ScholarPubMed
Mousazadeh, M, Paital, B, Naghdali, Z, et al. Positive environmental effects of the coronavirus 2020 episode: a review. Environ Dev Sustain. 2021;23(9):12738-12760.CrossRefGoogle ScholarPubMed
Venter, ZS, Aunan, K, Chowdhury, S, Lelieveld, J. COVID-19 lockdowns cause global air pollution declines. Proc Natl Acad Sci U S A. 2020;117(32):18984-18990. https://www.pnas.org/content/117/32/18984.short CrossRefGoogle ScholarPubMed
Menut, L, Bessagnet, B, Siour, G, et al. Impact of lockdown measures to combat COVID-19 on air quality over western Europe. Sci Total Environ. 2020;741. https://www.sciencedirect.com/science/article/pii/S0048969720339486 CrossRefGoogle Scholar
Kotnala, G, Mandal, TK, Sharma, SK, Kotnala, RK. Emergence of blue sky over Delhi due to coronavirus disease (COVID-19) lockdown implications. Aerosol Sci Eng. 2020;4(3):228-238.CrossRefGoogle Scholar
Baldasano, JM. COVID-19 lockdown effects on air quality by NO2 in the cities of Barcelona and Madrid (Spain). Sci Total Environ. 2020;741. https://www.sciencedirect.com/science/article/pii/S0048969720338754 CrossRefGoogle Scholar
Yunus, AP, Masago, Y, Hijioka, Y. COVID-19 and surface water quality: improved lake water quality during the lockdown. Sci Total Environ. 2020;731. https://www.sciencedirect.com/science/article/pii/S0048969720325298 CrossRefGoogle Scholar
Najah, A, Teo, FY, Chow, MF, et al. Surface water quality status and prediction during movement control operation order under COVID-19 pandemic: case studies in Malaysia. Int J Environ Sci Technol. 2021;18(4):1009-1018.CrossRefGoogle ScholarPubMed
Patel, PP, Mondal, S, Ghosh, KG. Some respite for India’s dirtiest river? Examining the Yamuna’s water quality at Delhi during the COVID-19 lockdown period. Sci Total Environ. 2020;744. https://www.sciencedirect.com/science/article/pii/S0048969720343758?casa_token=Qqi_-sm8dYsAAAAA:YRnYeSMPwSREKM4ncnjp3IMJC1-B8F1GjzWBcm0GC39xSArqrqomry6u75rb1PSWhz7add2qqFQ Google Scholar
Braga, F, Scarpa, GM, Brando, VE, et al. COVID-19 lockdown measures reveal human impact on water transparency in the Venice lagoon. Sci Total Environ. 2020;736. https://www.sciencedirect.com/science/article/pii/S0048969720331326/pdf?isDTMRedir=true&download=true CrossRefGoogle Scholar
Shen, J, Liu, C, Lv, Q, et al. Novel insights into impacts of the COVID-19 pandemic on aquatic environment of Beijing-Hangzhou Grand Canal in southern Jiangsu region. Water Res. 2021;193. https://www.sciencedirect.com/science/article/pii/S0043135421000713 CrossRefGoogle Scholar
Chowdhuri, I, Pal, SC, Arabameri, A, et al. Have any effect of COVID-19 lockdown on environmental sustainability? A study from most polluted metropolitan area of India. Stoch Environ Res Risk Assess. 2022;36(1):283-295.CrossRefGoogle ScholarPubMed
Khan, YA. The COVID-19 pandemic and its impact on environment: the case of the major cities in Pakistan. Environ Sci Pollut Res. 2021;28(39):54728-54743.CrossRefGoogle ScholarPubMed
Ganguly, R, Sharma, D, Kumar, P. Short-term impacts of air pollutants in three megacities of India during COVID-19 lockdown. Environ Dev Sustain. 2021;23(12):18204-18231. https://link.springer.com/article/10.1007/s10668-021-01434-9 CrossRefGoogle ScholarPubMed
Keshtkar, M, Heidari, H, Moazzeni, N, Azadi, H. Analysis of changes in air pollution quality and impact of COVID-19 on environmental health in Iran: application of interpolation models and spatial autocorrelation. Environ Sci Pollut Res. 2022;29(25):38505-38526.CrossRefGoogle ScholarPubMed
Pata, UK. How is COVID-19 affecting environmental pollution in US cities? Evidence from asymmetric Fourier causality test. Air Qual Atmos Health. 2020;13(10):1149-1155.CrossRefGoogle Scholar
Shakoor, A, Chen, X, Farooq, TH, et al. Fluctuations in environmental pollutants and air quality during the lockdown in the USA and China: two sides of COVID-19 pandemic. Air Qual Atmos Health. 2020;13(11):1335-1342.CrossRefGoogle ScholarPubMed
Kour, G, Kothari, R, Dhar, S, et al. Impact assessment on water quality in the polluted stretch using a cluster analysis during pre- and COVID-19 lockdown of Tawi river basin, Jammu, North India: an environment resiliency. Energy, Ecol Environ. 2021;1-12. https://link.springer.com/article/10.1007/s40974-021-00215-4 CrossRefGoogle Scholar
Ali, G, Abbas, S, Qamer, FM, Irteza, SM. Environmental spatial heterogeneity of the impacts of COVID-19 on the top-20 metropolitan cities of Asia-Pacific. Sci Rep. 2021;11(1). https://www.nature.com/articles/s41598-021-99546-9 CrossRefGoogle ScholarPubMed
De Maria, L, Caputi, A, Tafuri, S, et al. Health, transport and the environment: the impacts of the COVID-19 lockdown on air pollution. Front Public Health. 2021;9:1-7.CrossRefGoogle ScholarPubMed
Mostafa, MK, Gamal, G, Wafiq, A. The impact of COVID 19 on air pollution levels and other environmental indicators—a case study of Egypt. J Environ Manage. 2021;277. https://www.sciencedirect.com/science/article/pii/S0301479720314213?casa_token=wIyVYB6Fu7QAAAAA:pqzR5CxEpdpmZqXS_kAA431yjKLPqTcvZH6rUzTjqMH5AZSNZ1hZCAy1ZYzllNT6R5n-YOVDpB8 Google Scholar
Yang, M, Chen, L, Msigwa, G, et al. Implications of COVID-19 on global environmental pollution and carbon emissions with strategies for sustainability in the COVID-19 era. Sci Total Environ. 2022;809. https://www.sciencedirect.com/science/article/pii/S0048969721067334?casa_token=1AP5twWlGdgAAAAA:iCVepILRrPyqK9AScjmBc2VitjEVXSPtzE1qWNGZMh_rpJkFL8rYGFnJ36deEkkvwzeNPjOMRMQ CrossRefGoogle Scholar
Patterson Edward, JK, Jayanthi, M, Malleshappa, H, et al. COVID-19 lockdown improved the health of coastal environment and enhanced the population of reef-fish. Mar Pollut Bull. 2021;165. https://www.sciencedirect.com/science/article/pii/S0025326X21001582 CrossRefGoogle Scholar
Aman, MA, Salman, MS, Yunus, AP. COVID-19 and its impact on environment: improved pollution levels during the lockdown period—a case from Ahmedabad, India. Remote Sens Appl Soc Environ. 2020;20. https://www.sciencedirect.com/science/article/pii/S2352938520302743 CrossRefGoogle Scholar
Pacheco, H, Díaz-López, S, Jarre, E, et al. NO2 levels after the COVID-19 lockdown in Ecuador: a trade-off between environment and human health. Urban Clim. 2020;34. https://www.sciencedirect.com/science/article/pii/S2212095520302170 CrossRefGoogle Scholar
Silva, ACT, Branco, PTBS, Sousa SI V. Impact of COVID-19 pandemic on air quality: a systematic review. Int J Environ Res Public Health. 2022;19(4):1950. https://www.mdpi.com/1660-4601/19/4/1950 CrossRefGoogle ScholarPubMed
Bakola, M, Hernandez Carballo, I, Jelastopulu, E, Stuckler, D. The impact of COVID-19 lockdown on air pollution in Europe and North America: a systematic review. Eur J Public Health. 2022;32(6):962-968.CrossRefGoogle ScholarPubMed
Faridi, S, Yousefian, F, Janjani, H, et al. The effect of COVID-19 pandemic on human mobility and ambient air quality around the world: a systematic review. Urban Clim. 2021;38:100888. https://linkinghub.elsevier.com/retrieve/pii/S2212095521001188 CrossRefGoogle ScholarPubMed
Gebeyehu, DT, East, L, Wark, S, Islam, MS. Indirect positive health outcomes of COVID-19: a systematic review. Public Health. 2023;218:149-159.CrossRefGoogle ScholarPubMed
Zhang, R, Zhang, Y, Lin, H, Feng, X, Fu, TM, Wang, Y. NOx emission reduction and recovery during COVID-19 in East China. Atmosphere (Basel) [Internet]. 2020 Apr 1 [cited 2022 Feb 21];11(4). Available from: https://www.mdpi.com/699996 Google Scholar
Liu, Z, Ciais, P, Deng, Z, Lei, R, Davis, SJ, Feng, S, et al. Near-real-time monitoring of global CO2 emissions reveals the effects of the COVID-19 pandemic. Nat Commun [Internet]. 2020 Oct 14 [cited 2022 Feb 21];11(1):1-12. Available from: https://www.nature.com/articles/s41467-020-18922-7 CrossRefGoogle ScholarPubMed
Jiang, Q, Xu, Z, Ye, G, Pahlow, M, Hu, M, Qu, S. A systematic scoping review of environmental and socio-economic effects of COVID-19 on the global ocean-human system. Sci Total Environ. 2022;849:157925.CrossRefGoogle ScholarPubMed
Chirani, MR, Kowsari, E, Teymourian, T, Ramakrishna, S. Environmental impact of increased soap consumption during COVID-19 pandemic: Biodegradable soap production and sustainable packaging. Sci Total Environ. 2021;796:149013.CrossRefGoogle ScholarPubMed
Ammendolia, J, Saturno, J, Brooks, AL, et al. An emerging source of plastic pollution: environmental presence of plastic personal protective equipment (PPE) debris related to COVID-19 in a metropolitan city. Environ Pollut. 2021;269:116160.CrossRefGoogle Scholar
Aragaw, TA, De-la-Torre, GE, Teshager, AA. Personal protective equipment (PPE) pollution driven by the COVID-19 pandemic along the shoreline of Lake Tana, Bahir Dar, Ethiopia. Sci Total Environ. 2022;820:153261. https://linkinghub.elsevier.com/retrieve/pii/S0048969722003527 CrossRefGoogle ScholarPubMed
Ben, Haddad M, De-la-Torre, GE, Abelouah, MR, et al. Personal protective equipment (PPE) pollution associated with the COVID-19 pandemic along the coastline of Agadir, Morocco. Sci Total Environ. 2021;798:149282.Google Scholar
Cordova, MR, Nurhati, IS, Riani, E, et al. Unprecedented plastic-made personal protective equipment (PPE) debris in river outlets into Jakarta Bay during COVID-19 pandemic. Chemosphere. 2021;268:129360.CrossRefGoogle ScholarPubMed
De-la-Torre, GE, Rakib, MRJ, Pizarro-Ortega, CI, Dioses-Salinas, DC. Occurrence of personal protective equipment (PPE) associated with the COVID-19 pandemic along the coast of Lima, Peru. Sci Total Environ. 2021;774:145774.CrossRefGoogle ScholarPubMed
Kannan, G, Mghili, B, De-la-Torre, GE, et al. Personal protective equipment (PPE) pollution driven by COVID-19 pandemic in Marina Beach, the longest urban beach in Asia: abundance, distribution, and analytical characterization. Mar Pollut Bull. 2023;186:114476.CrossRefGoogle ScholarPubMed
Kouvara, K, Papatheodorou, G, Kosmopoulou, A, et al. COVID-19-related litter pollution on Greek beaches and nearshore shallow water environments. Mar Pollut Bull. 2022;185:114250.CrossRefGoogle ScholarPubMed
Mghili, B, Analla, M, Aksissou, M. Face masks related to COVID-19 in the beaches of the Moroccan Mediterranean: an emerging source of plastic pollution. Mar Pollut Bull. 2022;174:113181.CrossRefGoogle ScholarPubMed
Ortega, F, Calero, M, Rico, N, Martín-Lara, MA. COVID-19 personal protective equipment (PPE) contamination in coastal areas of Granada, Spain. Mar Pollut Bull. 2023;191:114908.CrossRefGoogle ScholarPubMed
Pizarro-Ortega, CI, Dioses-Salinas, DC, Fernández Severini, MD, et al. Degradation of plastics associated with the COVID-19 pandemic. Mar Pollut Bull. 2022;176:113474.CrossRefGoogle ScholarPubMed
Rakib, MRJ, De-la-Torre, GE, Pizarro-Ortega, CI, et al. Personal protective equipment (PPE) pollution driven by the COVID-19 pandemic in Cox’s Bazar, the longest natural beach in the world. Mar Pollut Bull. 2021;169:112497.CrossRefGoogle ScholarPubMed
Figure 0

Figure 1. In total, 58 articles met the inclusion criteria and entered the process of systematic review.

Figure 1

Figure 2. Number of articles published by year.

Figure 2

Table 1. General characteristics of the studied articles that were eligible for the review