New research has uncovered a hidden pathway that allows COVID-19 to infect the immune system and trigger damaging ...

Five years ago, on March 11, 2020, the World Health Organization declared COVID-19 a pandemic. Whether it still is depends on who you ask. There are no clear criteria to mark the end of a pandemic, ...

The findings suggest that Covid vaccines reduced the likelihood of severe illness last fall and winter.

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-19 vaccine boosters not only protect against SARS-CoV-2—the virus behind the most recent pandemic—but may also help ...

Changes in the vaccine advisory process in the United States have disrupted immunization guidance, which reinforces the need for independent evidence review to inform decisions regarding immunization ...

A massive international study of more than 3,100 long COVID patients uncovered a striking divide in how brain-related symptoms are reported around the world. In the U.S., the vast majority of ...

People do not need to have tested positive for the coronavirus to be considered for a diagnosis of long COVID, a new report from the National Academies of Sciences, Engineering and Medicine concludes.