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Update (January 5): On Monday evening, the FDA stated that dosing in the US will occur as planned, based on available data regarding efficacy, saying: “We know that some of these discussions about changing the dosing schedule or dose are based on a belief that changing the dose or dosing schedule can help get more vaccine to the public faster. However, making such changes that are not supported by adequate scientific evidence may ultimately be counterproductive to public health.”
Officials involved with the United States’s Operation Warp Speed—the program tasked with expediting the creation of a vaccine for COVID-19—are discussing the merits of rationing the Moderna vaccine for adults aged 18–55, as is being discussed in the United Kingdom. This would be accomplished either by giving half doses of the first shot or delaying the immunization’s second shot, Moncef Slaoui, the head of OWS, tells ...
