The Illinois Department of Public Health has confirmed the first case of measles in the state since 2019, which was identified in Cook County. This development serves as a poignant reminder of the significance of the measles vaccine. It also means that the virus could spread locally due to the dense population of Chicago.

The suspected case was initially reported on October 10 by the Cook County Department of Public Health and subsequently verified by the IDPH on the following day. Notably, this case pertained to an individual who had not received vaccination and had been exposed to the virus during international travel, as indicated by the IDPH.

“The case’s rash onset was identified as Oct. 9; therefore, the infectious period would be between Oct. 5 through Oct. 13,” IDPH said and concluded: “Prior to this case, the last measles case in Illinois was identified in 2019.”

It’s important to emphasize that the majority of individuals receive routine measles vaccination during childhood, which significantly reduces their risk. However, those who have not been vaccinated and believe they may have encountered the virus should consult with their healthcare provider about vaccination.

According to the IDPH, symptoms of measles encompass a rash, high fever, cough, runny nose, and red, watery eyes. These symptoms can manifest within a range of seven to 21 days. Individuals who experience measles symptoms are strongly advised to contact or email their healthcare provider prior to visiting a medical facility, aiming to prevent further transmission of the virus.