A health care worker uses a picture to show a person how to use a nasal swab for a self administered test at the new federally funded COVID-19 testing site at the Miami-Dade County Auditorium on July 23, 2020 in Miami, Florida. Vice Admiral Jerome Adams, the U.S. Surgeon General, visited the site, as the state of Florida experiences a spike in coronavirus cases, to encourage people to wear a mask and take other precautions to fight the pandemic.