The new year is kicking off with a spike in respiratory illnesses across the U.S., including COVID-19, flu and respiratory syncytial virus. Considering all the circulating illnesses right now, it ...

Wearing face masks may not have lowered the risk of COVID infection after the first Omicron wave, new research has shown. But that does not mean that face masks aren't useful, regardless. The wearing ...

Most San Francisco Bay Area counties are reinstituting mask requirements among workers in healthcare settings, timed to coincide with the arrival of the annual respiratory illness season and an ...

*Important notice: medRxiv publishes preliminary scientific reports that are not peer-reviewed and, therefore, should not be regarded as conclusive, guide clinical practice/health-related behavior, or ...