Health officials confirmed 33 cases of measles in Rockland County, N.Y., as of Oct. 29, according to PIX 11.
The new figure marks an 18-case increase since Oct. 23, reports CBS New York. Health officials are still waiting to confirm five additional cases.
The initial outbreak spread among Jewish communities in New York after several individuals contracted measles while traveling to Israel.
Most of the measles exposure happened in the Monsey, New Square, Nanuet, New City and Montvale New Jersey.
About 2,000 people received a mumps, measles, rubella vaccine in response to the outbreak, many of whom were vaccinated at free health clinics run by the Rockland Department of Health.
The New Jersey Department of Health is asking non-immunized children attending schools with students testing positive for measles to stay home for 21 days from the last known exposure to the virus.
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