Health officials on Long Island say hundreds of people may have been exposed to hepatitis A while receiving communion on Christmas Day.

The Nassau County Health Department said Monday that anyone who received communion at either the 10:30 a.m. or noon Masses at Our Lady of Lourdes Church in Massapequa Park on Dec. 25 may have been exposed.

A spokesman declined to provide details, citing privacy concerns.

Health officials will offer vaccines at the church this week. A church spokesman did not immediately comment.