Vaccine makers Pfizer PFE.N and BioNTech 22UAy.DE halted a large U.S. trial of their updated COVID-19 vaccine in healthy adults aged 50 to 64, saying enrollment in the trials had been too low to generate the needed data. In a letter to trial investigators dated March 30, seen by Reuters and previously unreported, Pfizer said […]
U.S. Supreme Court questions birthright citizenship limits as Trump watches
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