Food and Drug Administration says drugmakers do not have to conduct large-scale clinical trials for vaccines adapted to fight new coronavirus variants////
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While not specifically naming the virus, Magufuli on Sunday urged Tanzanians to begin wearing face masks for 'respiratory' illnesses that are becoming a problem
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US president tried to project message of re-engagement with the world and with global institutions after four years of Donald Trump's 'America First' policies
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Up to 90 healthy volunteers will be deliberately infected with virus with goal of developing more effective vaccines and treatments
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World Health Organization said UN-led COVAX initiative aims to start shipping about 90 million doses of COVID-19 vaccines to Africa this month
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