SA health workers may need booster shots

Vaccinated health care workers may need to get a booster shot in the coming weeks.

Around 500 000 health workers have received the single dose Johnson and Johnson COVID-19 vaccine as part of the Sisonke study.

The study came to an end over the weekend.

Why do they now need a booster shot?

Let’s get some answers from the co-lead investigator of the study, Dr Glenda Gray, who joined us via Skype.