More than four weeks after a food service employee at a popular Hamilton restaurant was diagnosed with hepatitis A, no additional cases have emerged and the possible incubation period is nearly over, health officials said Friday.

Township health officer Jeff Plunkett said there were a few suspected cases including one false positive test, but none were confirmed following the initial infection of a worker for Rosa’s Restaurant and Catering on South Broad Street.

“It was intense there for a period of a week or 10 days, but everybody was extremely cooperative,” Plunkett said Friday. “Due to the fact that word got out so quickly, so many people were vaccinated and inoculated not just by our office but — if you speak to the pharmacies around town — they had multiple reorders of hepatitis A vaccines.”

Township officials announced the infection of the Rosa’s employee on Dec. 1 and recommended that anyone who ate food from the restaurant between Nov. 10 and Dec. 1 be vaccinated for hepatitis A.