April 19, 2022
Except for children, who took BioNTech vaccines, all age groups should at least take three doses of the vaccines since the protective efficacy will reduce with time, the official stated.
Hong Kong govt official urges public to take 3rd, 4th jabs
Except for children, who took BioNTech vaccines, all age groups should at least take three doses of the vaccines since the protective efficacy will reduce with time, the official stated.