After 42 US states and Washington, DC, issued stay-at-home orders in response to the rising death toll of the COVID-19 pandemic, the overall community infection rate declined by about 58%, according to a new study in the American Journal of Infection Control.The researchers, from Johns Hopkins Bloomberg School of Public Health in Baltimore, used state government websites and case counts from the Johns Hopkins Center for Health Security to model the effects of mandatory social isolation on virus mitigation.They found that the community infection rate dropped from 12% more cases each day (indicating that cases were doubling every 5 or 6 days) to 5% (indicating that cases were doubling every 14 days) after the states locked down starting Mar