SAN FRANCISCO -- Another COVID-19 vaccine -- AstraZeneca -- is poised to arrive in the U.S., bringing a fourth option for Americans. Each vaccine is administered slightly differently, some can result ...

Cold and flu seasons are back in Michigan, and experts say now it the time to protect yourself with an annual flu shot. Flu season begins in the fall, typically in October, according to the Cleveland ...

The flu can also cause a general feeling of fatigue or malaise, Ray says, as well as gastrointestinal issues like diarrhea and nausea, especially among children. As with COVID, some people also ...

DEAR DR. ROACH: What is the difference between a cold and the flu? — A.T.R. ANSWER: Both colds and influenza (the “flu”) are respiratory illnesses that are caused by viruses. Influenza is caused ...

University of Queensland researchers visualized yellow fever virus particles at near-atomic detail, uncovering major structural differences between vaccine and virulent strains. The insights could ...

The shingles vaccine not only offers protection against the painful viral infection, but a new study suggests that the two-dose shot also may slow the progression of dementia.

A version of this story appeared in CNN’s What Matters newsletter. To get it in your inbox, sign up for free here. Health and Human Services Secretary Robert F. Kennedy Jr.’s campaign to change how US ...