On Thursday, health officials in Hamilton, NJ, confirmed two more cases of Hepatitis A in the township about a month after a food service worker at Rosa’s Restaurant and Catering in Hamilton first became infected with the virus.

Health officials said that an employee of the Hair Port Salon in Hamilton had been diagnosed with Hepatitis A infection. The employee has been released from the hospital and is recovering at home, they added.

Staff and customers who visited the salon between Dec. 4 and Dec. 30 may be at risk of contracting the virus and should be vaccinated if they have not already done so, officials said.

Hepatitis A was also confirmed Thursday in a fitness instructor at a Hamilton-area YMCA. The instructor is recovering at home, official said.

Anyone who visited any of those locations between Dec. 5 and Dec. 29 may be at risk.

Officials confirmed during routine questioning that both individuals had eaten at, or from, Rosa’s during the first illnesses, but they were not certain that the subsequent cases were related.