As the vaccines are still new, their effectiveness is still being extensively trialed and thus there is no certainty that one is better than the other.
The original blue topaz brooch has seen sever.
Selangor had a list of digitally-gapped people who rely on us to book for their vaccination.
The only medical reason to take a third dose of the Sinovac vaccine is if you had an earlier allergic reaction to the Pfizer vaccine, and there is no other alternative available.