Sinovac coronavirus vaccine 78% effective in Brazil trial, details sparse
By Eduardo SimesSAO PAULO, Jan 7 (Reuters) - A coronavirus vaccine developed by China's Sinovac Biotech was 78% effective in a late-stage Brazilian trial...
By Eduardo SimesSAO PAULO, Jan 7 (Reuters) - A coronavirus vaccine developed by China's Sinovac Biotech was 78% effective in a late-stage Brazilian trial...