CDC data showed that between Dec 25 and 31, XBB.1.5 accounted for more than 40 percent of all new COVID-19 cases. It has been spreading especially fast in the Northeast, where the variant accounted for about 75 percent of all new infections. The XBB variant is a recombinant strain of B...
Omicron variant: What to know about the new COVID-19 strain An advisory panel of the World Health Organization classified on Nov. 27, 2021, a worrying new COVID-19 variant first detected in South Africa as a highly transmissible virus of concern, naming it "Omicron" under its Greek letter...
What to know about the new KP.2 COVID variant A new coronavirus variant is spreading through the U.S., according to the CDC. KP.2, also known as the "FLiRT" variant, is a mutation of the Omicron strain. Amira Roess, professor of global health and epidemiology at George Mason Universit...
The new booster shots have been updated to target two different COVID strains in one shot -- the currentomicron subvariants, BA.4 and BA.5, which make up 99% of new cases in the U.S., and the original strain of COVID-19. This is the first time current COVID-19 vaccines h...
Close to all new COVID-19 cases in the United States are now being caused by the JN.1 variant, the Centers for Disease Control and Prevention says, with an estimated 93.1% of infections now blamed on the highly mutated strain. The CDC's latest biweekly estimate of the variant's ...
Omicron variant: What to know about the new COVID-19 strain An advisory panel of the World Health Organization classified on Nov. 27, 2021, a worrying new COVID-19 variant first detected in South Africa as a highly transmissible virus of concern, naming it "Omicron" under its Greek letter...
The 2023–2024 COVID-19 vaccines produced by Moderna and Pfizer target a different strain of COVID-19 than was in the original vaccine. Think influenza vaccines—they are all flu vaccines, but the strains they protect against change year after year. ...
Opens in a new tab or window email article The CDC's vaccine advisors on Thursday recommended updated COVID-19 booster shots from Pfizer/BioNTech and Moderna that target the latest Omicron subvariants, setting aside concerns about the lack of clinical trial data with the newly formulated ...
Researchers also found that on average it took approximately four days for the delta variant to reach detectable levels using a standard COVID-19 test kit compared with the six days it took for the original coronavirus strain to be detected. Experts believe the delta variant spreads more easily...
It's still not clear, though, how an adenovirus may cause liver inflammation in healthy children. The U.K. agency is investigating a few theories, including a new strain of adenovirus, an undiscovered co-infection or toxin, or an "increased susceptibility" in kids after months of staying hom...