A person receives the second dose of Sinovac's Covid-19 vaccine at the Bang Khun Thian Geriatric Hospital in Bangkok, Thailand on April 21, 2021. - Reuters
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.
