A more transmissible subvariant, BA.2, accounts for around three-quarters of U.S. coronavirus cases.
in the U.K. has enabled hundreds of thousands of people to self-report their symptoms through smartphone apps.
Spector said 84 percent of people in the U.K. who logged symptoms lately said they had runny noses, compared to around 73 percent in early January. Seventy-two percent said they had fatigue, up from 68 percent during the first omicron wave. But experts generally agree that the public shouldn’t worry too much about the emergence of each omicron subvariant.
"If they share enough of the mutations to be classified as an omicron variant, there's likely going to be a lot of cross-protection. But over time, we know with all coronaviruses that reinfection becomes common as antibody levels fall," he said.
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