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Children and young people are about half as likely to catch COVID-19 and spread the virus to others compared to older adults, an analysis published Thursday by PLOS Computational Biology found....Read More

Most people’s immune systems can fight back against COVID-19 when they develop severe disease, according to a study published Thursday by PLOS Pathogens....Read More

People who have received both doses of the Pfizer-BioNTech or Moderna COVID-19 vaccines do not need to quarantine if they have been exposed to a person infected with the virus, according to the CDC....Read More

Double-masking, or wearing a cloth face covering over a medical procedure mask, increases a person’s protection against exposure to COVID-19 virus particles by more than 90%, according to an analysis released by the CDC....Read More

At least 20 outbreaks of antibiotic-resistant infections have occurred in hospitals across the country since the start of the COVID-19 pandemic, the U.S. Centers for Disease Control and Prevention said Wednesday....Read More

A treatment used to prevent rabies in adults after possible exposure also appears to be safe and effective in children, according to a new study published Wednesday by Human Vaccines & Immunotherapeutics....Read More

The U.S. Food and Drug Administration on Tuesday authorized emergency use of a monoclonal antibody treatment for mild to moderate COVID-19 illness in adults and most youth....Read More

Older and overweight adults exhale more respiratory droplets into the air compared to their younger, lighter-weight counterparts, potentially making them COVID-19 “superspreaders,” a study published by PNAS found....Read More

People in lower-income communities in Massachusetts received fewer COVID-19 tests than those in more affluent areas during the first wave of the pandemic in the state, despite higher rates of infection....Read More

New genetic variations of COVID-19 represent a significant challenge to efforts to end the pandemic, Dr. Anthony Fauci said Monday....Read More