JAMA: The effect of suspension on the morbidity and mortality of neo-coronary pneumonia in the United States.

During the U.S. pandemic, states enacted non-drug interventions, including school closures, to reduce the spread of coronavirus disease (COVID-19) in 2019.
all 50 states closed schools in March 2020, researchers looked at the effects of school closures and their time on reducing the incidence and mortality of COVID-19.
the study, conducted between March 9, 2020 and May 7, 2020, grouped the states based on the cumulative incidence of COVID-19 per 100,000 residents in the state at the time of the school closure.
of the study was the daily incidence and mortality rate of COVID-19 per 100,000 inhabitants.
school closures, the cumulative incidence of COVID-19 in each state was 0 to 14.75 cases per 100,000 people.
School closures were significantly associated with a decrease in COVID-19 morbidity (weekly adjustment relative change of -62%) and mortality rate (weekly adjustment relative change of -58%), with a significant correlation in the states with the lowest cumulative morbidity rates, and -72% in the states with the lowest incidence of COVID-19, compared with -49% in the states with the highest cumulative incidence rates.
model estimates show that the lowest cumulative incidence rate is one-4 of the states with the highest cumulative incidence of COVID-19, with 26 days of school closures, an additional 128.7 deaths per 100,000 people, and only an additional 1.5 deaths per 16 days of closure.
between March 9, 2020 and May 7, 2020, school closures in the United States were associated with reduced coVID-19 morbidity and mortality, and in states that closed schools earlier, suspensions had a significant effect on reducing morbidity and mortality.
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