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The effects of spraying on the amounts of airborne foot-and-mouth disease virus present in loose-boxes

Published online by Cambridge University Press:  19 October 2009

R. F. Sellers  and
K. A. J. Herniman
R. F. Sellers
Affiliation:
Animal Virus Research Institute, Pirbright, Woking, Surrey
K. A. J. Herniman
Affiliation:
Animal Virus Research Institute, Pirbright, Woking, Surrey
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The air of loose-boxes which had previously held pigs infected with foot-and-mouth disease was sampled for virus after various procedures. Removal of infected pigs led to a 12- to 16-fold reduction in the amount of virus after 5 min. and a 400-fold reduction after 60 min. After heavy spraying (1·2 mm. of water in 5 min.) the amount of virus was reduced 500-fold compared to 30-fold after light spraying (0·20 mm. of water in 5 min.). The partition of infectivity associated with particle size was measured. The partition found after light spraying was similar to that found 5 min. after the pigs had been removed. Heavy spraying brought about a reduction in the infectivity associated with the large particles (> 6 μm.) but had no effect on particles less than 3 μm. A similar partition was found 60 min. after the pigs had been removed. The findings are discussed in relation to the spread of foot-and-mouth disease by the airborne route.

Type
Research Article
Information
Journal of Hygiene , Volume 70 , Issue 3 , September 1972 , pp. 551 - 556
Copyright
Copyright © Cambridge University Press 1972

References

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