The Chicago Department of Public Health (CDPH) announced Sunday a second confirmed case of measles in a resident of a new arrivals shelter in Pilsen and doubled down on its message that new arrivals and all Chicagoans need to be vaccinated to protect themselves and their communities. CDPH continued to collaborate with community and healthcare partners at the shelter this weekend to screen residents for symptoms and get them vaccinated. An additional, unrelated measles case in Chicago was announced Thursday, and an increased number of measles cases have occurred around the country and the world in recent months due to lower vaccination coverage. Measles is a highly contagious and serious respiratory infection that causes a rash and high fever and is capable of leading to pneumonia and other complications and can be particularly challenging for babies and young children. The two cases of measles among new arrivals were identified in young children. The first case has recovered and is no longer infectious while the second is hospitalized in good condition. Case investigations are underway to ensure those the two may have come in contact with while infectious are informed and vaccinated.