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Booty_Bumping t1_jdjougw wrote on March 24, 2023 at 9:46 PM

Reply to comment by [deleted] in What happened to the old COVID variants, like Delta? Could they come back? by number1dork

Evidence is now leaning towards the possibility that it came from an immunocompromised person who had a very long infection - https://pubmed.ncbi.nlm.nih.gov/35739343/