Around the world and within the U.S., the percentage of people wearing masks during the COVID-19 pandemic has varied enormously. What explains this? A new study […]
There was an increase in drug overdose deaths in San Francisco during the COVID-19 pandemic, according to a research letter published online May 12 in JAMA […]
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) seropositivity is not associated with low vitamin D levels, according to a study published online May 19 in JAMA […]