variants

Biden is expected to reinstate travel bans amid fears about new variants as the global case count reaches 100 million

US scientists work to update Covid vaccines for variants, says Fauci | Coronavirus

Moderna says the vaccine appears to protect against new variants of COVID-19

Controlling new variants of the coronavirus: is Britain’s blockade working?

UK doctor warns that the world may need the annual COVID-19 vaccine due to variants

New variants of coronavirus complicate the battle against the pandemic

New variants of coronavirus complicate the battle against the pandemic

Vaccines may not work as well in variants, says Hancock

Coronavirus variants are here. Can vaccines accompany?

Why are the new SARS-CoV-2 variants spreading so dramatically around the world?

See why some strains of COVID-19 are spreading faster than others

Michigan health officials concerned about COVID variants