NYACK - A waiter at a Nyack restaurant has tested positive for hepatitis A, prompting state and county officials to alert the public.

The waiter works at La Fontana and most likely picked up the disease in a recent trip overseas. Hepatitis A is a liver virus and symptoms include fever, fatigue, vomiting and joint pain.

Rockland Health Commissioner Patricia Schnabel Ruppert says diners are not at high risk, but they're at risk enough to take precautions. Anyone who ate at La Fontana on March 29, March 30, or April 1 is being urged to get the vaccine if they haven't had it already. The vaccine is ineffective more than 14 days after exposure, so patrons who dined at La Fontana between March 19 and 28 should be monitored for any symptoms.

Dozens of people filed into the Rockland Fire Training Center in Pomona to get a free vaccination Wednesday. Officials expect to treat about 100 people, but believe more than 300 patrons could have been exposed.

Restaurant owner Tony Triarsi says his entire staff has been vaccinated and it's safe to dine at La Fontana.

The Rockland Department of Health is offering free hepatitis A vaccines to anyone who may have been exposed.