Northern California's COVID-19 resulted from multiple virus strains: study Gilead's remdesivir prevents lung damage in COVID-19 study on monkeys National Guard troops in Washington DC test positive for COVID-19 Canada eases restrictions for families separated by virus travel ban George Floyd mourned in Houston AMC Entertainment reports 2.17-bln-USD quarterly loss amid pandemic US stocks decline on recession report Nasdaq Composite breaks above 10,000 for first time Trump's Hollywood Walk of Fame star blacked out in George Floyd protests Floyd 'changed world', family told New York takes first step of reopening Anti-racism protests mount in US, Europe Thousands bid farewell to George Floyd Chinese stand with African Americans US must notify WHO 1 yr before cutting ties Police funding emerges as US political issue Ecuador's Sangay Volcano blankets coast with ash US, Russia to discuss arms control this month: US envoy More than half US states may undercount COVID-19 cases: media report