What happened to the old COVID variants, like Delta? Could they come back? Submitted by number1dork t3_120rixo on March 24, 2023 at 5:29 PM in askscience 209 comments 3,359
[deleted] t1_jdja8in wrote on March 24, 2023 at 8:07 PM Reply to comment by sf_sf_sf in What happened to the old COVID variants, like Delta? Could they come back? by number1dork [removed] Permalink Parent 1
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