The Health Ministry-owned ProtectHealth Corporation said it is working to expand the number of vaccination centres (PPV) offering Sinovac’s Covid-19 vaccine as a booster shot.

For now, it said only a limited number of PPVs are offering the Sinovac vaccine as an option for a booster dose, as the majority of PPVs are administering Pfizer’s vaccine instead.

“The PPVs offering Sinovac vaccine will be increased in...