Thailand leaked memo raises concerns over efficacy of Sinovac vaccine

The internal memo, which contained various opinions, was reported by local media and shared widely on social media. Thai Health Minister Anutin Charanwirakul confirmed it to be authentic.

It included a comment from an unnamed official who recommended that officials not give health workers a booster shot of Pfizer-BioEntech’s vaccine, because such a move would “be acknowledging that the Sinovac vaccine is not effective.”

thailand administered Sinovac Inactivated Virus Vaccine For most healthcare workers, and its real-world studies showed that the two doses were 95% effective in reducing mortality and severe symptoms. The study showed that it was 71 to 91 percent effective in preventing alpha-type infections.

Sinovac did not immediately respond to a request for comment on the vaccine’s efficacy.

Comments in the leaked document prompted calls from leading Thai health experts, including a top medical council official, to give healthcare workers the Pfizer-BioNTech booster shot.

The hashtag “Give Pfizer to medical personnel” is trending on Twitter in the country with over 624,000 tweets on Monday.

Senior health official Opus Karnakawinpong told reporters the document was not genuine, however, contrary to Health Minister Anutin.

Anutin said the comments on the booster shot were “just an opinion” and that there was an expert panel to determine vaccine policy. He said two doses of Sinovac’s vaccine were effective and “provided results beyond the norm.”

Thai experts have urged the government to use a variety of coronavirus vaccines to better protect the population.

It relies mainly on AstraZeneca shots, produced locally by a royally owned company. Siam Bioscience. Officials say Moderna’s mRNA vaccine will also be available.

Thailand has purchased 20 million doses of the Pfizer-BioNTech vaccine for future delivery and will receive 1.5 million doses donated by the United States later this month.

World Health Organization Experts have found that the Sinovac vaccine was effective in preventing COVID-19 in adults under 60, but cautioned that there was not enough quality data on the risk of serious adverse effects.


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