Endogenous public health responses include the individual behaviours, community-based organizational responses, and informal rules that resolve economic problems during public health crises. We explore the relevance of endogenous responses in Orthodox Jewish communities during the COVID-19 pandemic. We analyse Orthodox newspapers in New York City and find that (a) rabbis advised their communities on how to stay healthy and observant to their religious beliefs; (b) rabbinical councils and advisory boards provided private, public health guidance; (c) private, Jewish ambulatory services provided religiously sensitive healthcare; (d) Orthodox Jewish schools privately provided public health services; and (e) community members altered religious rules, rituals, and traditions to mitigate the spread of the virus. While these responses did not occur seamlessly or without conflict, the Orthodox community worked diligently to provide public health services to remain healthy while also observing religious traditions. Our paper provides shows how communities develop endogenous public health responses during crises.