COVID-19 vaccine sites in Miami-Dade, Broward and Monroe counties Published: Tags: MIAMI-DADE COUNTY Click here for the complete list of vaccination sites run by Miami-Dade County. MAJOR SITES: Open 7 days a week, 8 a.m. – 10 p.m. Appointment not required but recommended to pre-register at Commvax. Site offers the Pfizer vaccine (both first and second doses) and Johnson & Johnson one-dose vaccine. Individuals under 18 years of age must arrive with a parent or legal guardian and proper documentation. Ad