All three COVID-19 vaccines are being offered as booster shots in Washoe County. The Health District says you can now mix-and-match vaccines for your booster, meaning, for example, those who got Pfizer, this time can get Moderna or Johnson & Johnson for their booster. Moderna boosters are only offered at a half-dose due to the vaccine’s efficacy. Booster shots are available for the elderly, those who are immunocompromised or have forward-facing, essential jobs.