CNN – Some of the children in Colorado and Boston have tested positive for enterovirus D68, a virus that has been sending children around the country to the hospital with severe respiratory illness. But others had no signs of the virus in their system. “It’s probably going to be weeks to months in terms of trying to understand what’s happening,” said Dr. Samuel Dominguez with Children’s Hospital. As of Wednesday, the Centers for Disease Control and Prevention had confirmed 500 cases of respiratory illnesses caused by enterovirus D68 in 42 states Continue