São Paulo Confirms First Measles Case of 2026 in Infant With Recent Travel to Bolivia

Overview

• The patient is an unvaccinated six‑month‑old girl who developed fever and rash on February 8 after travel to Bolivia from December 25, 2025 to January 25, 2026.
• The case was notified in February and confirmed on March 4 by municipal and state authorities after genomic sequencing by a reference laboratory.
• The City of São Paulo initiated epidemiological investigation, timely vaccination blocking, intensified immunization and 30‑day monitoring of contacts.
• State health officials reaffirm vaccination as the primary prevention method, outlining routine doses for children, two doses for ages 5–29, one dose for ages 30–59 and complete schedules for certain workers; a Dose Zero is advised for infants 6–11 months in high‑risk situations.
• The Ministry of Health reports this as Brazil’s first measles case of 2026, following two imported cases in São Paulo in 2025 and no local transmission in the state since 2022.