Overnight Health Care: Biden rescinds Trump-approved Medicaid work requirements in Michigan, Wisconsin | CDC director says racism is ‘serious public health threat’ | Current worst COVID-19 hot spots: Brazil and India

Welcome to Thursday’s Overnight Health Care. In a milestone, the CDC reports that a quarter of American adults are fully vaccinated almost four months after the first COVID-19 vaccine was authorized.  If you have any tips, email us at…