Why can Covid symptoms sometimes return after treatment? And what should you do about it?
Amid an uptick in Covid infections, administrators, staff and patients are divided over the need for masks in health care settings.
An uptick in hospitalizations and deaths persists, but the numbers are relatively low and new vaccines are around the corner.
Scientists and educators are searching for ways to improve air quality in the nation’s often dilapidated school buildings.
Many people don’t want to think about the virus, but an increase in cases means it’s time for a refresher on how to protect yourself and others.
Infections remain very low, despite signs of a slight increase. Now, experts are looking for clues to what living with the coronavirus will be like this winter and beyond.
As Covid testing increasingly moved to the home, the wastewater data fell out of sync with case and hospitalization rates, a new study found.
Research from the N.I.H. illustrates how persistent and pervasive the condition is across the United States.
The virus was contained in most countries with a combination of vaccination and behavioral change.
If you’re at average risk for breast cancer, start getting mammograms at 40 and go every two years, an influential scientific panel says. Many women were doing it anyway.