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PETALING JAYA: The Ministry of Health is studying whether Sinovac vaccine recipients who had received a Pfizer booster would need a fourth dose to increase their protection against the highly infectious variant of Covid-19 Omicron, explains Khairy Jamaluddin.

The health minister said the ministry had taken note of a recent study which found that Sinovac’s two-dose Covid-19 vaccine followed by a Pfizer booster was less effective in curbing the spread of the Omicron variant.

“The Ministry of Health technical working group is studying the information obtained and will submit to the Covid-19 Vaccination Working Group (CITF) a proposal indicating whether those who received two doses of the Sinovac vaccine followed by a Pfizer booster would have need another dose.

“However, it is too early for us to draw any conclusions,” Khairy said at a press conference on Saturday (January 1st).

Based on media reports, a study by researchers at Yale University, the Dominican Republic’s Department of Health, and several other institutions found that two injections of Sinovac vaccine followed by a booster dose Pfizer-BioNTech showed a weaker immune response against Omicron compared to other variants.

In the same statement, Khairy announced that Malaysia had recorded two more Omicron infections on December 31 last year, bringing the total number of confirmed Omicron infections in the country to 64.

Of the total number of cases, 63 were imported and one is local infection.