variants

Adjusting COVID-19 vaccines will keep them effective against new variants

Novavax offers data from the first promising vaccine trial with tests against COVID variants

Stocks drop after new vaccines are less effective for some variants of COVID-19

Video: Rochelle Walensky of the CDC on COVID-19 variants, reopening schools

New variants of coronavirus fueling a ‘second wave’ in Africa, warns WHO

Slaughtered by the virus, South Carolina discovers that it now also has one of the new variants.

US Coronavirus: The US can defeat Covid-19 variants with the right tools, says the White House adviser

The most vaccinated nation in the world fights against virus variants

The new Covid variants will ‘hit us a lot’, says Dr. Peter Hotez

The new Covid variants will ‘hit us a lot’, says Dr. Peter Hotez

New variants of the coronavirus continue to emerge. Here’s what we know about them

Coronavirus variants: what they do and how worried you should be