Fearful that New York’s measles outbreak could infiltrate the federal correctional institution in Orange County, the facility has been closed to outsiders after the state health department revealed a sick child had been a visitor.

The child visited the satellite camp at the Federal Correctional Institution in Otisville on March 28. The New York Health Department notified the staff on April 3 that the child had recently been diagnosed with the illness, according to a press release.