South Africa suspends use of AstraZeneca’s COVID-19 vaccine after it fails to clearly stop virus variant

“The South African trial of the vaccine, conducted in about 2000 people, found such a low efficacy against mild and moderate disease, under 25%, that it would not meet minimal international standards for emergency use.”

via Science

The pandemic appears to have spared Africa so far. Scientists are struggling to explain why.

“Although Africa reported its millionth official COVID-19 case last week, it seems to have weathered the pandemic relatively well so far, with fewer than one confirmed case for every thousand people and just 23,000 deaths so far. Yet several antibody surveys suggest far more Africans have been infected with the coronavirus—a discrepancy that is puzzling scientists around the continent.”

via Science