A handy guide to quarantine, isolation and more, based on the latest science.

1 in 5 parents say their children ate fast food more often since the pandemic shutdowns and 1 i

A pediatric infectious diseases expert weighs in on mask-wearing, when to keep sick kids home and measures to keep schools open this s

We know more now about how immunocompromised people — including organ transplant recipients, certain cancer patients and those on medi

An extra vaccine dose may help.