If you look up live vaccine shedding you'll find the info you need. Look up the words you want results on plus NCBI to get the government research.
People who are old, immune compromised, or treating cancer are supposed to stay away from newly vaccinated kids due to the shedding danger.
Found an example re influenza vaccines on hiv https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2615200/ at the bottom "Almost 90% of confirmed shedding of vaccine virus occurred within 4 days after vaccination, and 3 additional positive specimens were obtained on day 5 or 6 post-vaccination." from the 4th paragraph of the Discussion section at the end of the article.
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