Helen Branswell covers issues broadly related to infectious diseases, including outbreaks, preparedness, research, and vaccine development. Follow her on Mastodon and Bluesky. You can reach Helen on ...

A new Covid-19 variant has begun to become the dominant in recent weeks, across the US and the UK. Stratus continues to be classified as a "variant under monitoring," by the World Health Organization, ...

The Food and Drug Administration (FDA) granted full approval on Thursday to Moderna’s COVID-19 vaccine for children, making it the first COVID shot for kids aged 6 months to 11 years old that is no ...

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 new COVID-19 variant is spreading across the US - with some health experts concerned it can evade some vaccines. Nicknamed “Cicada” for its long hibernation and noisy return, the strain is now ...

Remember when we thought Covid was a two-week illness? So does Michael Peluso, assistant professor of medicine at the University of California, San Francisco. He recalls the rush to study acute Covid ...