People who visited Children’s Hospital Colorado’s emergency room, Walgreens, Sam’s Club or Natural Grocers in Arvada during the time when the virus lingered in the air should

A child visited several locations in Aurora before testing positive for measles, but while infectious, according to public health officials. They're now urging people who were in those places at those times to monitor for symptoms.

The Colorado Department of Public Health and Environment said another case of measles has been confirmed in Colorado.