Is omicron more dangerous than the other variants of coronavirus?
1:25
(CNN Spanish) -
There is still much we do not know about the omicron variant of the coronavirus, but scientists are racing to determine its severity, transmissibility and if it evades current vaccines.
At least 70 countries and territories have imposed travel restrictions from various African countries following the discovery of the variant.
Minute by minute: concern, restrictions and uncertainty about the omicron variant
A growing number of countries have reported confirmed cases of the omicron variant, including Brazil and Spain.
Moderna's chief executive said he thought the variant would have an impact on the vaccine's efficacy.
omicron