• Now That BA.5 Is Dominant, Stopping It Will Be Difficult

    1 month ago - By Time

    Around the world, the latest Omicron subvariant, BA.5 , is quickly becoming the dominant strain of the SARS-CoV-2 virus. It just took the top spot in the U.S.: As of the last week of June, BA.5 made up more than half of all new COVID-19 cases, according to new estimates from the U.S. Centers for Disease Control and Prevention. That's up 10 percentage points compared to the prior week.
    For several reasons-including a lack of protective mandates and mutations in the virus-BA.5 may now be tricky to get under control.
    The power of BA.5 (and its sibling BA.4 , which makes up about 16% of new...
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