Thailand defends mixing Covid-19 vaccines amid concerns
Published: Jul 13, 2021 1:21 PM
Thailand defended its move to mix-and-match vaccines to boost protection against Covid-19 after a World Health Organisation (WHO) scientist warned of uncertainty over the safety and efficacy of using different vaccine combinations.
Senior virologist from Chulalongkorn University Dr Yong Poovorawan said a shot of China's Sinovac, an inactivated virus vaccine, with a second dose of AstraZeneca, a viral vector vaccine, have been working well in boosting immunity.
“It can achieve a booster effect within...
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