South Africa conducted a clinical trial that showed that vaccines by Serum Institute offer minimal protection against Coronavirus strain active in the country, after which South Africa stopped its COVID-19 vaccination program. Owing to this finding, South Africa has now decided to return approximately 1 million vaccine doses back to Serum Institute. These doses were supplied to South Africa in early February.
South Africa had stopped the AstraZeneca Oxford COVID-19 vaccine program a...
