In the later stages of COVID-19, various breathing and positioning exercises, medications, and other home remedies can help clear the mucus or phlegm associated with a productive cough or wet cough. A ...

Since May, highly contagious "FLiRT" coronavirus variants – a term for new mutations of Omicron – have been driving a rise in infections and emergency room trips. Virus levels at local wastewater ...

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 ...

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 ...

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 ...