USAToday, December 14 (USAToday) -- A South African study released on Tuesday showed that the Omiljun strain was greatly more contagious and reduced the new crown epidemic...
Pfizer vaccine South Africa omicron Covid vaccine
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Bloomberg December 11 news, a laboratory study in South Africa showed that the effectiveness of two doses of Pfizer COVID-19 vaccine in preventing symptomatic infection of Omicron is only ...
Pfizer vaccine South Africa omicron Joe Fahra
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