This was one of the questions someone posed during the FDA approval of the pfizer vaccine. I'm paraphrasing here, but you can look up the exact question on one

This was one of the questions someone posed during the FDA approval of the pfizer vaccine. I'm paraphrasing here, but you can look up the exact question on one of the youtube videos or read the transcription: "Suppose someone was infected with a retrovirus, could reverse transcriptase embed that rna into the dna? This could be especially worrisome if we're talking about a pregnant woman and fetus undergoes rapid cell division... etc.." I would be surprised if I did not mangle up some terms & concepts in the paraphrasing above. Someone who knows more can correct me or just watch/read the fda hearing. Another thing that was mentioned in the FDA hearing was that pfizer also tested it on HIV positive people. HIV is a retrovirus which also carries the reverse transcriptase enzyme. I don't want to draw any conclusions from this because I don't have any medical knowledge. Maybe someone here with more insight could comment.