The first big real-world study of the Pfizer/BioNTech vaccine to be independently reviewed shows the shot is highly effective at preventing Covid-19, in a potentially landmark moment for countries desperate to end lockdowns and reopen economies. Up until now, most data on the efficacy of Covid-19 vaccines has come under controlled conditions in clinical trials, […]
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In Haiti, virus crisis leaves cancer patients in limbo In early March, 31-year-old Melchior visited a doctor in his home country of Haiti, ...
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