The symptoms of COVID-19 have changed over time. Here, infectious disease doctors share what many people are experiencing ...

A number of diseases tend to peak in the winter, thanks to indoor gatherings that help germs spread. The list includes not ...

A new study identifies a mechanism for how COVID vaccines may, in infrequent cases, drive heart inflammation, a condition ...

Children who were vaccinated against Covid-19 last season had a “substantially lower risk” of emergency department and urgent care visits related to the virus, according to a report published Thursday ...

It's too soon to know if the trend will last. But health providers fear the national discourse around vaccines could yield ...

The agency claimed that 10 children’s deaths were linked to the shots, although it did not release evidence to support the ...

The US Food and Drug Administration intends to put a “black box” warning on Covid-19 vaccines, according to two people familiar with the agency’s plans.

A. You might be suffering from influenza. Colds do not usually cause body aches. This year, the dominant influenza virus has ...

In 2020, a Chinese virologist fled to the United States, aided by allies of President Trump who sought to promote her ...

For millions suffering from long COVID, their persistent breathlessness, brain fog and fatigue remain a maddening mystery, ...

SARS‑CoV‑2, the virus that causes COVID-19, continues to mutate, with some newer strains becoming less responsive to current ...