BANGKOK (The Nation/ANN): The Sinovac vaccine provides as much as “99.4 per cent immunity against Covid-19 a month after the second dose”, Chulalongkorn University virology specialist and chief of the Centre of Excellence in Clinical Virology Dr Yong Poovorawan said in a Facebook post on Thursday (April 22).
He was citing a study on immunity by the centre and Banphaeo General Hospital in Samut Sakhon.
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