evidence: On Tuesday, the Chicago Department of Public Health (CDPH) confirmed three more measles cases from new migrant arrivals at a shelter in Pilsen in the Lower West Side. The CDPH is coordinating what it calls "a comprehensive, city-wide response" that has included in-person support from the Centers for Disease Control and Prevention (CDC) to curb the effects of the infectious virus. [...] Martin went on: "Measles is already here in the United States, but the migrant population on the whole is under-vaccinated compared to the traditional Chicago population and is therefore at higher risk of infection."