Samples collected from four patients who recently died have tested positive for enterovirus D68, according to the Centers for Disease Control and Prevention (CDC). It is unclear what role the virus played in their deaths. (snip) This year, enterovirus D68 has been sending more children than usual to the hospital with severe respiratory illnesses. It seems to be most affecting children with a history of asthma or breathing problems. As of Wednesday, the CDC had confirmed 472 cases in 41 states. The virus may also be linked to a small number of cases of a mysterious neurologic illness seen in...