The U.S. is experiencing another uptick in COVID infections after the holidays, with hospitalizations rising for the eighth week in a row. A new dominant variant, JN.1, has quickly spread to account ...

Long COVID is a complex condition that is still not fully understood. According to the Department of Health and Human Services, the working definition of long COVID is "signs, symptoms and conditions ...

COVID rebound is when COVID-19 symptoms return soon after they go away or a person registers a positive COVID-19 test result after testing negative for several days. COVID rebound can happen in people ...

Yearly Covid-19 Booster Recommendations in Canada, Europe, and Australia. Although the rapid development of multiple Covid-19 vaccines in 2020 represents a major scientific, medical, and regulatory ...

A sweeping new definition of long COVID could help affected people get recognition of their condition and improve diagnosis and treatment. The U.S. National Academies of Sciences, Engineering and ...