Westchester officials are now confirming eight children in the county have the measles.
Westchester County Executive George Latimer says the children are from northern Westchester, in the Bedford and Mount Kisco areas.
They range in ages from 6 months to 14 years old. Two have been hospitalized. Six of them are siblings. None of them attend public schools or child care. They do attend a private school.
News 12 has learned that they were exposed in Rockland and Brooklyn, where there are ongoing outbreaks.
In Rockland, the number of confirmed cases stands at 168 since the outbreak in October.
Two religious holidays are approaching, Passover and Easter, and many families will be traveling and coming together to observe.
Westchester County Health Commissioner Dr. Sherlita Amler says the best way to prevent the spread of the virus is vaccination. She says there are enough vaccines available and people can get free vaccinations through the county or their health provider.