A New Covid-19 Sub-variant is Spreading Rapidly in the United States

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May 4. First came Omicron, then came its highly contagious subvariant, BA.2. That subvariant gave rise to its own subvariants, whose share of new coronavirus cases in the United States is growing.

The coronavirus is constantly mutating. While some variants seem to vanish, causing little ripples of surges in their wake, others have kept driving large outbreaks. Experts say a new form, BA.2.12.1, is spreading rapidly and will probably become the dominant form of the virus in the United States in the next few weeks. There’s no indication yet that it causes more severe disease than earlier forms did.

In the week endied Saturday, BA.2.12.1 made up about 36 percent of all new cases in the United States, according to estimates by the Centers for Disease Control and Prevention. That’s up from 26 percent of cases in the prior week, and 16 percent of infections during the second week in April.

First detected in the United States by New York State health officials in April, BA.2.12.1 is spreading more rapidly than the first versions of the Omicron variant, which caused a huge surge in cases over the winter. The new version descends from BA.2 and appears to have spread even more quickly than BA.2, although the reasons are still under investigation.

Source: The New York Times

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118450cookie-checkA New Covid-19 Sub-variant is Spreading Rapidly in the United States