Brazil reopens amid looming threat from delta variant


              A Brazil Flamengo fan cheers before the start of a Copa Libertadores round of 16 second leg soccer match between Brazil's Flamengo and Argentina's Defensa y Justicia, the first game with fans amid the COVID-19 pandemic at the National Stadium in Brasilia, Brazil, Wednesday, July 21, 2021. (Adriano Machado/Pool via AP)
            
              Brazil Flamengo fans cheer during a Copa Libertadores round of 16 second leg soccer match against Argentina's Defensa y Justicia, in the first game with fans after the COVID-19 pandemic, at the National Stadium in Brasilia, Brazil, Wednesday, July 21, 2021. (Adriano Machado/Pool via AP)
            
              Commuters crowd a bus during the COVID-19 pandemic in Rio de Janeiro, Brazil, Friday, July 23, 2021. (AP Photo/Bruna Prado)
            
              A man gets a shot of the AstraZeneca vaccine for COVID-19 during a vaccination program for people over age 35 in Rio de Janeiro, Brazil, Friday, July 23, 2021. (AP Photo/Bruna Prado)
            
              Commuters wait for a public Rapid Transit Bus (BRT) during the COVID-19 pandemic in Rio de Janeiro, Brazil, Friday, July 23, 2021, during the COVID-19 pandemic. (AP Photo/Bruna Prado)
            
              A man gets a shot of the AstraZeneca vaccine for COVID-19 in his arm covered by a tattoo of Star Trek's Spock character during a vaccination campaign for people over age 35 in Rio de Janeiro, Brazil, Friday, July 23, 2021. (AP Photo/Bruna Prado)
            
              Commuters crowd a bus promoting the use of face masks during the COVID-19 pandemic in Rio de Janeiro, Brazil, Friday, July 23, 2021. (AP Photo/Bruna Prado)
            A man gets a shot of the AstraZeneca vaccine for COVID-19 during a vaccination campaign for people over age 35 in Rio de Janeiro, Brazil, Friday, July 23, 2021. (AP Photo/Bruna Prado) Commuters wait for a public Rapid Transit Bus (BRT) during the COVID-19 pandemic in Rio de Janeiro, Brazil, Friday, July 23, 2021, during the COVID-19 pandemic. (AP Photo/Bruna Prado) A health worker prepares a shot of the AstraZeneca vaccine for COVID-19 during a vaccination campaign for people over age 35 in Rio de Janeiro, Brazil, Friday, July 23, 2021. (AP Photo/Bruna Prado)