An analysis of mortality data shows that COVID-19 ranks as a leading cause of death among children and teens.
Here's what you need to know about the omicron subvariant XBB.1.5, which is causing an increasing number of COVID-19 cases in the U.S.
Here's a look at the science behind COVID-19 variants, such as omicron and delta, and which coronavirus mutants are the most concerning in different areas.
Here are the most common COVID-19 symptoms for adults, kids, vaccinated individuals and omicron-variant infections.
As medical oxygen dwindles in Ukrainian hospitals, the WHO has called for setting up a safe transit route through neighboring Poland.