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Considered the most contagious COVID-19 subvariants to date, BA.4 and BA.5 have fueled surges in case counts across the country, including in the Midwest, where...
Two new omicron subvariants - BA.4 and BA.5 - account for nearly half of COVID cases in Massachusetts and New England, new CDC data finds.
Omicron subvariants BA.4 and BA.5 made up almost 35% of new COVID-19 infections last week in the U.S., according to the CDC. That's why experts say breakthrough infections are rising.
COVID-19’s Omicron variants BA.4 and BA.5 are gaining ground and people want to know if its possible to get infected with either BA.4 or BA.5 after recovering from BA.2.
Two new omicron subvariants now account for nearly a quarter of all COVID-19 cases in New England, according to an update from the U.S. Centers for Disease...