By Hugo Francisco de Souza A novel nasal booster approach may help close the gap between systemic vaccination and infection-blocking mucosal immunity, offering fresh insight into next-generation COVID ...

Pediatric COVID-19 severity appears to be declining among hospitalized children as Omicron subvariants evolve.

SAN FRANCISCO -- There's a new "subvariant" of the omicron variant that's been spreading across Europe and the U.S. Preliminary data shows it's more contagious than omicron. Scientist have named it BA ...

SAN FRANCISCO -- Preliminary data out of South Africa is giving the world insight into how strong omicron really is. The South African Medical Research Council just reported this variant may cause ...

Covid-19 Active Cases India Jan 21 Highlights, Omicron Variant Cases in India, Coronavirus 3rd Wave, Covid-19 Vaccine Dose ...

With the latest COVID-19 variant leading to record numbers of cases worldwide, a top infectious disease expert says the virus is undergoing a major shift. Dr. Robert Redfield, the former director of ...

Some school systems around the U.S. extended their holiday break Monday or switched back to online instruction because of the explosion in COVID-19 cases, while others pressed ahead with in-person ...