If 80% of people wear a mask in public, COVID-19 transmission could be halted....
Make mask-wearing easy, understood, and expected, write 3 Penn professors....
Why do some people die from COVID-19 infection while others don’t even show symptoms?...
COVID-19 spread would have been 35 times greater without 4 social distancing measures....
Age and chronic disease were associated with death among older COVID-19 patients in New York City, according to a new study....
Without testing data, the U.S. response to the coronavirus will continue to fall short....
A safe approach to opening the economy will look different in different parts of the country....
A 3-day lag between infection and spread of COVID-19 could help us get back to work safely, according to one model....
The coronavirus pandemic has created conditions that cause delirium....
The novel coronavirus will be with us for a long time, according to 2 analyses....
