Covid-19: Bivalent vaccine effective against XBB, Omicron, says Khairy

Covid-19: Second booster allowed for those aged 50-59, says KJ

KJ: Senior citizens with comorbidities may opt for second booster against Covid-19

The Straits Times | Second Covid-19 booster for eligible seniors?

Health Ministry studying need for second booster shot for Sinovac recipients, says Khairy

Pfizer, AZ booster shots can be given at least three months after second dose, says Khairy