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Brazil starts testing Oxford coronavirus vaccine

Researchers in Brazil began administering an experimental coronavirus vaccine developed by Oxford University to volunteers, the Federal University of Sao Paulo said Wednesday. The vaccine, developed together with pharmaceuticals group AstraZeneca, is one of the most promising of the dozens...

US facing 'critical' coronavirus surge

Coronavirus infections are surging across large parts of the United States, the top US infectious disease expert has warned, as the death toll in Latin America passed 100,000. The developments highlighted how far away the world remains from ending the pandemic, six months into a crisis that...