New York ( CNN ) -- Hundreds of people might have been exposed to hepatitis A while receiving communion on Christmas Day , Long Island officials said Monday . The Nassau County Department of Health is offering vaccines to those who attended two services at Our Lady of Lourdes Church in Massapequa Park in Long Island , New York , according to Nassau County Department of Health spokeswoman Mary Ellen Laurain . Individuals might be at risk if they received communion during the 10:30 am and noon Masses , according to a statement from the county health department . `` We know that there 's a potential that ( exposure ) could have happened , '' she said . `` We think the risk is relatively low . '' At least one member of the clergy involved in the communion process was infected with the disease , Laurain said . There have been no additional reports of illness . Some 1,300 people were in attendance between the two church services , she added . Symptoms of the disease include the onset of fever , fatigue , poor appetite , nausea , stomach pain , dark-colored urine and jaundice , according the statement . The disease is rarely fatal and most people recover within a few weeks without complications , it said . Individuals exposed to the disease should receive vaccination within two weeks of exposure , the statement said .
Hundreds of people might have been exposed to hepatitis A on Christmas Day . Vaccines offered to attendees at Our Lady of Lourdes Church in Massapequa Park . The outbreak is the largest ever reported by New York City, and it has sickened more than 100 people. Symptoms of hepatitis A include fever , fatigue , poor appetite , nausea , stomach pain .