The U.S. Department of Homeland Security has announced that a person detained at an Immigration and Customs Enforcement facility in Arizona has been infected with measles, a highly contagious virus that causes high fever and a distinctive rash. Earlier this month, "the Arizona Department of Public Health confirmed an active measles infection in a Mexican detainee at the Florence Detention Center," a DHS spokesperson said in an email Wednesday. "ICE Health Services Corp. immediately instituted quarantine measures to prevent further spread and infection, halting all movement within the facility and isolating all individuals suspected of having had contact with the infected person," the email said.