The fastest-spreading COVID-19 subvariants yet, the two latest versions of omicron appear to evade protection from vaccines and previous infections more easily than any others before. As of July 2, the subvariant BA.5 was responsible for nearly 54% of COVID cases in the U.S. BA.4, a similar subvariant, accounted for nearly 17% more, according to the latest data from the…
The U.K., where BA.4 and BA.5 infections also account for the majority of recent COVID cases, reported runny nose, sore throat, headache, persistent cough and fatigue as its most common symptoms last week.Zoe COVID Symptom Study
An update to the COVID vaccines is needed to fight Omicron BA.4 and BA.5 subvariants that are increasing case counts now, says Dr. Uché Blackstock, an MSNBC medical contributor and head of Advancing Health Equity. Francois Balloux, the director of the University College London Genetics Institute, said while BA.1 and BA.2 are"pretty different...BA.2, BA.4 and B.5 from a neutralizing antibody perspective are essentially interchangeable."
"There’s really no clear evidence that they’re more or less likely to make people sick and cause severe illness and death," stated Montefiori.
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