The Village of Oak Park | 123 Madison St.  Oak Park, IL 60302 |

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Emerging & Communicable Diseases

This page provides information and resources on emerging or communicable diseases highlighted by the Health Department. 


In the spring of 2024, Chicago and Cook County health officials began receiving reports of measles for this first time since 2019. Measles was declared eliminated from the U.S. in 2000, the result of a highly effective vaccination program. However, measles remains common in many parts of the world. Outbreaks can occur in the U.S. if measles is brought into the United States by unvaccinated citizens or travelers who get sick while they are in other countries.

Measles is particularly dangerous for babies, young children, pregnant women, and people with compromised immune systems. Complications from measles can lead to pneumonia, seizures, hearing loss, life-long brain damage, or even death.


There has not been a confirmed case in Oak Park to date.

During March and April of 2024, cases counts were rising almost daily, and data continues to come in to local health departments. As of Thursday, April 4 there were 56 identified measles cases in Illinois, which is more than all combined cases in the state between 2010 and 2023. Of the 56 cases from this year, 53 were identified in Chicago, and one additional case was identified in suburban Cook County.

Get the latest Chicago data from the Chicago Department of Public Health dashboard: