Residents and staff who got the antibody drug had up to a 57% lower risk of getting COVID-19 compared to others at the same facility who got a placebo, the drugmaker said. Among nursing home residents only, the risk was reduced by up to 80%.

New vaccine studies must include communities of color that have been hard-hit by the pandemic. To help, researchers in more than a dozen spots around the country are rolling out mobile health clinics to better reach minority participants and people in rural areas who might not otherwise volunteer.

President Joe Biden will initiate a national COVID-19 strategy to ramp up vaccinations and testing, reopen schools and businesses and increase the use of masks — including a requirement that Americans mask up for travel.

The majority of 21 shipments of the Moderna COVID-19 vaccine on Sunday were spoiled en route to Michigan, likely delaying the state's vaccination efforts this week, the Department of Health and Human Services said,