Case Identification and Response
An adult in far southern Illinois tested positive for measles, marking the state's first confirmed case of 2025. The Illinois Department of Public Health (IDPH) is investigating potential exposure sites and monitoring the situation closely.
The IDPH has identified seven locations in Marion, Illinois, where the public may have been exposed to measles between April 7-15. Health officials emphasize the importance of vaccination, citing the MMR vaccine's effectiveness in preventing the disease.
National Context and Health Recommendations
The U.S. is experiencing a significant increase in measles cases, with over 800 reported nationwide, more than double the total in 2024. Illinois health officials urge residents to ensure they are up-to-date with measles vaccinations.
IDPH has launched a Measles Outbreak Simulator Dashboard to inform the public about vaccination rates and outbreak risks at schools. They advise anyone potentially exposed to monitor for measles symptoms and contact healthcare providers if symptomatic.