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Some oral poliovirus vaccines were contaminated with infectious SV40 after 1961. https://www.ncbi.nlm.nih.gov... Some oral…
Some oral poliovirus vaccines were contaminated with infectious SV40 after 1961. https://www.ncbi.nlm.nih.gov... Some oral…
Some oral poliovirus vaccines were contaminated with infectious SV40 after 1961. Cutrone R 1, Lednicky... Some oral poliovirus…
EVIDENCE DID YOU KNOW... There are 190 countries in the world. America has bases in 130 of them. FM... EVIDENCEDID YOU KNOW...
#vaccination #sanitation This study was designed to see why infant mortality was higher in some areas... #vaccination #sanitation…