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ICE Quarantines Florence Detention Center as Measles Cases Linked to Detainees Confirmed in Pinal County

Officials say the public risk remains low, with the cluster contained within a broader statewide resurgence.

Overview

  • Pinal County has confirmed three measles cases this month, and county officials say all are associated with individuals in federal custody.
  • DHS confirmed an active infection in a Mexican national detained at the Florence Detention Center, and ICE Health Services halted movement and quarantined contacts inside the facility.
  • Pinal County reports that investigations and contact tracing are underway, and CoreCivic says detainees have routine access to medical care at the site.
  • Arizona has reported about 25 measles cases so far in 2026, including a large ongoing outbreak centered in Mohave County, as U.S. totals remain elevated compared with pre-2025 levels.
  • Maricopa and Pima counties have issued public exposure notices, and one recent Maricopa case had no known source of exposure, prompting renewed vaccination reminders from health officials.