A girl holds her doll in an alley of the Rocinha slum of Rio de Janeiro, Brazil, Tuesday, March 24, 2020. The narrow alleyways of Brazil's largest favela reduce airflow around homes packed tightly together and the poor neighborhood, which lacks proper sewage, has a high incidence of tuberculosis. Authorities are concerned that COVID-19 could easily spread in the favelas of Rio. (Photo by Leo Correa/AP Photo)
