Alejandro Díaz greets a cat on Oct. 23 at an apartment complex in the Little Havana neighborhood of Miami. He's an outreach worker with Healthy Little Havana, going door to door to talk to people about getting tested for COVID-19. Little Havana is a neighborhood in Miami that, until the pandemic, was known for its active street life along Calle Ocho, including live music venues. There you can find examples of the quintessential ventanita serving Cuban coffee and a historic park where men gather to play dominoes. But during the pandemic, a local group called is zeroing in on this area with a very specific assignment: convincing residents to get a coronavirus test.