CHICAGO - Five babies at a suburban Chicago daycare center have been diagnosed with measles, adding to a growing outbreak of the disease across the United States, Illinois health officials said on Thursday.
Officials are investigating the cluster of measles cases at KinderCare Learning Center in Palatine, said a statement from the Illinois and Cook County health departments. All the children are under 1 year old and would not have been subject to routine measles vaccination, which begins at 12 months.
The source of the infection was not immediately known.
Public health officials have reported that more than 100 people across the United States have been infected with measles, many of them traced to an outbreak that began at the Disneyland theme park in Anaheim, California, in December.
Measles is a highly contagious respiratory disease that causes fever, red and sore eyes, runny nose, cough and a rash. It can be fatal in some cases.
It was declared eliminated in the United States in 2000 after decades of intensive childhood vaccine efforts.