The updated COVID-19 booster is now available in North Carolina for children and teens five and older.
Preliminary data about omicron suggests the variant became widespread across southern Africa in a very short period of time. Scientists say its many mutations may play a role in its transmissibility.
The newly identified strain of the coronavirus, which could be more transmissible than the previously dominant delta variant, has global health officials worried about a possible new surge in cases.
Cases of the variant have popped up in several states. But neither the WHO nor the CDC considers it a variant of concern, and the fast-spreading delta variant continues to dominate U.S. cases.
More contagious than other variants, and maybe more likely to cause severe disease, Delta is spreading so fast in the U.S. it could cause another surge this summer or fall, according to new research.
This animated video uses puzzle pieces to show how a coronavirus binds to a cell's surface — and what happens when a mutation occurs.
If you imagine viruses as pieces of a jigsaw puzzle, that can help explain what happens when a coronavirus variant comes into contact with human cells.
With a more contagious variant now dominant in the U.S., the country's genomic surveillance capacity is getting a major boost.
The variant known as B.1.1.7, which is more easily spread, was first identified in England last fall. Since then, it has spread quickly in the U.S.