Visit www.snhd.info/covid-vaccine for a list of vaccination clinics operated by the Southern Nevada Health District, its partners and other community organizations. People 12 and older can take their shot at a clinic offering the Pfizer vaccine, while anyone 18 and older can take their shot at a clinic offering the two-dose Moderna vaccine or single-dose Janssen (Johnson & Johnson) vaccine. If an appointment is required, click the Book Now button to schedule. Walk-ins are accepted at several clinics as noted on that page.