A remarkably mutated coronavirus variant classified as BA.2.86 seized scientists' attention last week as it popped up in four countries, including the US. So far, the overall risk posed by the new ...

In the cohort that received the BA.5-containing bivalent booster, the neutralizing activity against all the omicron subvariants as compared with that against WA1/2020 was better than in the other two ...

The omicron variant of the coronavirus has been dominant in the U.S. since December, but the version of omicron that drove the major infection surge during the winter now accounts for less than 2 ...