Some patients report a sharp, stabbing pain when they swallow, often at the back of the throat.
As hundreds of thousands of travelers will pass through airports this week, doctors are urging passengers to wear masks as a new variant is circulating.
The best time to take an at-home COVID-19 test may be on the fourth day of having symptoms, according to a new study.
Vaccine manufacturers have said that testing shows that their vaccines are effective against EG.5, the currently dominant strain in the United States.
A summer wave of COVID-19 cases is hitting the US, and raising questions about vaccines, quarantine and testing.
"It's time for people to start thinking about how they will protect themselves again."