Challenge trials help researchers study immune responses. Skeptics still doubt the approach is worth the risks ...

It was on January 11, 2020 when health officials in the central Chinese city of Wuhan announced that a 61-year-old man had ...

The world first became aware of Covid-19 five years ago. We evaluate where we are, remember how we got here, and consider ...

Speculation about the alleged findings of a study on long COVID and post-vaccination syndrome spread widely among vaccine ...

In the first two years of the covid-19 pandemic, numerous New Scientist covers were dedicated to the global emergency caused ...

YUFAN LU FOR LE MONDE It was a lighting, global spread rarely seen in recent human history, comparable in scale to the ...

Since protection from disease has not been demonstrated for any vaccine tested in an animal model that mimics human SARS disease, further vaccine development to improve vaccine efficacy is needed.

The H5N1 bird flu — widespread in wild birds worldwide and the cause of outbreaks in poultry, U.S. dairy cows and even ...