Author: Adrianna Rodriguez, USA TODAY

The U.S. may see more flu as students go back to in-person learning and states loosen mask mandates amid a return to social gatherings, experts say.

Though teens were more likely than babies to get infected, a statistical model showed those ages 0 to 3 years were more likely to transmit the virus.

Some who got the Johnson & Johnson COVID-19 vaccine are worried they’re not protected against the delta variant and want a Pfizer or Moderna shot.

A fully vaccinated person who gets COVID-19 won’t be contagious for long, experts say, and may not have the chance to transmit the virus to others.

Most vaccinated people say they’re relieved the CDC is recommending masks again. They’re just frustrated guidance changed in the first place.

The CDC may be hoping to ratchet up pressure on unvaccinated Americans and empower businesses and schools to implement mask mandates, experts say.

Although breakthrough infections are possible, they’re rare and experts say vaccinated Americans are more likely to suffer from a cold than COVID-19.

Although breakthrough infections are possible, they’re rare and experts say vaccinated Americans are more likely to suffer from a cold than COVID-19.

Hantaviruses are a family of virus that spread through rodents, according to the CDC. The Sin Nombre virus is spread through the deer mouse.