SAO PAULO, Jan 13 (Reuters) – Brazilian President Jair Bolsonaro said on Wednesday he was right to criticize the credibility of a Chinese COVID-19 vaccine developed by Sinovac Biotech that posted disappointing efficacy results in local trials.

On Tuesday, researchers in Sao Paulo state announced that the Chinese vaccine was 50.4% effective at preventing symptomatic infections in a local trial – barely enough for regulatory approval and well below the rate announced last week.…

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