Here’s what you need to know: A test event for the Olympics at the National Stadium in Tokyo last month.Credit…Charly Triballeau/Agence France-Presse — Getty Images Domestic spectators will be allowed to attend Olympic events in Tokyo this summer, the president of the Games announced on Monday, ending months of speculation that athletes could be deprived…

Here’s what you need to know: Administering a Covid-19 vaccine in Kathmandu, Nepal, this month. Even after a weekslong nationwide lockdown, nearly one in three of the country’s coronavirus tests has been coming back positive.Credit…Prakash Mathema/Agence France-Presse — Getty Images Sri Lanka is tapping Japan. Nepal has asked Denmark. Bangladesh has appealed to its diaspora…

Here’s what you need to know: Health care professionals screened people entering the emergency room at Highland Hospital in Oakland, Calif., last year.Credit…Justin Sullivan/Getty Images The United States is poised to reach a once-unthinkable number of 600,000 Covid-19 deaths. And had it not been for the removal of hundreds of deaths from official tallies in Northern…