People who drank a beverage at the East Farmingdale restaurant Trento in mid- to late July may have been exposed to hepatitis A and may be eligible for free treatment Friday or Saturday, the Suffolk County Health Services Department said.

A worker at the restaurant had the infectious virus, possibly exposing people who drank beverages there July 19, 23, 26, 29 or 30, the department said.

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Treatment can help to prevent or lessen the severity of illness when given within two weeks of exposure, so a vaccine or immune globulin is being offered to people who had beverages at Trento on July 29 or 30, the department said.

Preventive treatment isn’t recommended for people exposed before July 29, the department said, and others should see a doctor if they become sick.

Treatment will be available from noon to 7 p.m. Friday and from 10 a.m. to 4 p.m. Saturday at the health department office at 3500 Sunrise Hwy., Building 200, Suite 124, in Great River.

Hepatitis A is an inflammation of the liver caused by the hepatitis A virus. The virus may be spread by consuming food or drink that has been handled by an infected person.