LONDON - AstraZeneca on Monday became the third pharmaceutical company to announce positive results from late-stage trials of a coronavirus vaccine, saying that its candidate, developed by Oxford University, is up to 90% effective.

Riverside Health System in Virginia has ordered a specialized freezer for each of its five hospitals to keep precious vials of coronavirus vaccine as cold as a deep Antarctic freeze.

WASHINGTON - As the coronavirus rages across the country, community health centers and small doctors' offices, AIDS clinics and homeless shelters are struggling with a scarcity of protective gear to buffer workers from harm, their budgets and buying power unable to compete with large medical institutions.

WASHINGTON - The Centers for Disease Control and Prevention is recommending that those planning to travel internationally this season get tested for the novel coronavirus before and then again after their flights.