The U.S. reported the lowest level of infection since the early days of the pandemic and welcomed back sports fans to stadiums. Airline travel rose to a pandemic record.
WASHINGTON — The world needs the cooperation of the Chinese government to trace the origins of covid-19 and prevent future pandemic threats, two leading U.S. disease experts said Sunday. Information to support the theory that the SARS-CoV-2 virus may have escaped from a lab in Wuhan, China, has increased, said