Covid-19: South Africa suspends use of AstraZeneca vaccine
By Sola Ogundipe Efforts to combat the Covid-19 pandemic in South Africa suffered a setback on Sunday as the country suspended the use of the AstraZeneca-Oxford COVID-19 vaccine after evidence emerged that the vaccine did not protect clinical-trial participants from mild or moderate illness caused by the more contagious COVID-19 virus variant ( B.1.351) that
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