The first-term Republican received a flu shot in Reno on Tuesday, a day after Washoe County health officials confirmed the first case of influenza.
Sandoval tweeted about his injection, saying, “a shot is the best prevention.”
It takes about two weeks after being vaccinated to build up immunity.
Influenza is highly contagious, and health officials say the seasonal outbreak likely won’t peak until January or February.
Symptoms include aches, chills, fever, sneezing, coughing and gastrointestinal distress.