Rockland health officials are holding a vaccine clinic Friday after 11 cases of measles have been confirmed in Rockland County.

About 200 people are expected at the clinic at the Pascack Community Center in Nanuet.

A similar number of people came out to an MMR vaccine clinic in Monsey on Thursday.

The Rockland County health department has been authorized by the state to bar unvaccinated students from attending school.

Letters sent home to parents of students at schools with confirmed cases ask them to keep their unvaccinated children home until at least Nov. 3.

The county has not confirmed which or how many schools have been affected.

Investigators believe travelers brought the disease from Ukraine, where there’s currently a massive outbreak.

Professionals are urging unvaccinated students to come to these clinics and protect themselves.

Dr. Patricia Schnabel Ruppert, the Rockland County health commissioner, said, “The MMR vaccine is very safe and effective and not associated with any of the issues years ago were reported.”

Measles is highly contagious for the unvaccinated.

Symptoms include red rash, fever, runny nose, and coughing.

A quarter of those infected end up in the hospital.