NPR News: Two new omicron variants are spreading in N.Y. and elsewhere. Here's what we know

Two new omicron variants are spreading in N.Y. and elsewhere. Here's what we know
The variants — BA.2.12.1 and BA2.12.2 — have been detected in New York and other states as well as 5 other countries. One has a mutation that seems to give it an edge in evading the immune system.

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