The Moderna shot approved in the U.K. is "bivalent," meaning it's a mix of two versions of the vaccine: Half is targeted at the original strain of COVID-19, and half is a new formulation designed to fight the original omicron variant, also known as BA.1.
The Congo Basin and West African variants were reclassified as Clade I and Clade II, the latter of which has two subclades. The new names go into effect immediately.
(CNN) -- The CDC says the nation should move away from restrictive measures such as quarantines and social distancing and focus on reducing severe disease from COVID-19.
More than 10,000 Americans have now tested positive in the monkeypox outbreak across the U.S., according to figures published late Wednesday by the CDC, as federal health officials say they are still racing to contain the virus.