A county in New York has declared a state of emergency following the outbreak of more than 100 people who have been diagnosed with measles. Starting at 12 a.m. on Wednesday, anyone under 18 who has not been vaccinated will be banned from public places until they receive the vaccine, ABC News reports.
Health officials confirmed 151 reported cases of measles, according to WABC.
According to Kaiser Health News, the measles outbreak in New York, which began in October, has gone on longer and infected more people than any other current outbreak in the country.
ABC News reports that many of the measles cases in New York have been concentrated among children of Orthodox Jewish families who attend religious schools, where the vaccination rates are reportedly below 95 percent.
Health officials say the measles vaccination is 97 percent effective. Pregnant women, children under 6 months, and those who are immunocompromised or immunosuppressed are among high-risk groups.