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, ...

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 ...

Traveling across state lines in search of an available shot. Scrambling to get a doctor’s prescription. Showing up for a pharmacy vaccination appointment only to be denied. Those are some of the ...

A discovery about how severe COVID-19 damages lung cells suggests that an existing drug could treat lingering respiratory problems not just from COVID but influenza and other respiratory infections.

Clockwise from top left: A second-grader does remote schoolwork at the Reading, Pennsylvania, Boys and Girls Club in January 2021. Protesting against COVID-19 vaccine mandates in Buffalo, New York, in ...

Este artículo estará disponible en español en El Tiempo Latino. An abundance of evidence indicates the mRNA COVID-19 vaccines are remarkably safe and work well to protect against severe disease. But ...

This year’s updated Covid-19 vaccines have been approved by the US Food and Drug Administration for adults 65 and older and younger people with certain medical conditions that put them at a higher ...