— The Augusta Center for Health and Rehabilitation has seen a rapid spike in the number of confirmed coronavirus cases, with nearly two-thirds of residents now infected. Forty-one residents and 14 staff members have tested positive for COVID-19. That’s up from four confirmed cases reported on Friday. One resident who tested positive for COVID-19 has died.
— Governments around the world hope that antibody tests, which typically use a finger-prick of blood on a test strip, could soon ease public restrictions by identifying people who have previously had the virus and have developed some immunity to it. But health officials are questioning their accuracy.
— Watch: Why the Maine CDC breaks down coronavirus cases by county, not town
—As of 5 p.m. Sunday, the coronavirus has sickened 550,016 people in all 50 states, the District of Columbia, Puerto Rico, Guam, the Northern Mariana Islands and the U.S. Virgin Island, as well as caused 21,733 deaths, according to Johns Hopkins University of Medicine.
— Elsewhere in New England, there have been 22,860 cases and 686 deaths in Massachusetts, 11,510 cases and 494 deaths in Connecticut, 2,665 cases and 63 deaths in Rhode Island, 727 cases and 27 deaths in Vermont and 929 cases and 23 deaths in New Hampshire, according to the New York Times.