Brazil researchers report disappointing 50.4% efficacy for China’s CoronaVac vaccine
RIO DE JANEIRO: A coronavirus vaccine developed by China’s Sinovac showed “general efficacy” of 50.4% in a late-stage trial in
Read moreRIO DE JANEIRO: A coronavirus vaccine developed by China’s Sinovac showed “general efficacy” of 50.4% in a late-stage trial in
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