The outbreak appears to have begun in Israel, and spread to American Jewish communities via people returning from visits to Israel. In New York City, the outbreak has been most heavily concentrated in Williamsburg and Boro Park; cases have also been confirmed in Midwood/Marine Park. Rockland County in upstate New York has had dozens of cases, and Lakewood, New Jersey, has had over a dozen.
Children generally must be vaccinated in order to attend school, but may receive an exemption for religious or medical reasons. Following the outbreak in Brooklyn, the New York City Health Department initially said that no unvaccinated children would be allowed to attend schools in which a measles case was reported.
But on Thursday, the Health Department announced that any unvaccinated child will be prohibited from attending a yeshivah – from pre-kindergarten through 12th grade – in the Brooklyn zip codes 11204, 11205, 11206, 11211, 11218, 11219, 11220, 11230, 11249. The ban will be effective until the outbreak is declared over.
One dose of the measles-mumps-rubella (MMR) vaccine is required for children attending day care and pre-kindergarten; two doses are required for children in kindergarten through 12th grade. The requirement is also fulfilled if student presents results of blood work showing immunity to measles.
Students who contract measles must stay home from school until the fifth day after the rash onset.
Yeshivos are responsible for enforcing the immunization requirements and banning students who do not comply. Failure to comply may result in the yeshivah receiving Commissioners Orders and fines.