The Children's Hospital of Michigan in Detroit reports 21-month-old Madeline Reid has died of the rare respiratory virus that, in the past two months, has infected hundreds of children across the country.

Children's Hospital Colorado reports that, as of Friday, 11 children in Colorado have been hospitalized with partial paralysis.

In the space of a month, hundreds of children across America have been admitted to the hospital with breathing problems that the Centers for Disease control suspect to be Enterovirus D68, a rare virus that causes cold and asthma-like symptoms that can quickly turn severe. Children's Hospital Colorado in Denver has seen more than 900 children with respiratory problems between Aug. 8 and Sept. 4, ABC News reports—85 were admitted, some to intensive care.