“We found a disproportionately higher rate of the South African variant among people vaccinated with a second dose, compared to the unvaccinated group,” said the university’s Adi Stern.
“This means that the South African variant is able, to some extent, to break through the vaccine’s protection.”
The researchers advised caution given the small number of people in the study with the South African variant, which is rare in Israel. Pfizer said earlier this month that its jab is around 91 per cent effective at preventing Covid.