Denver school for asthmatic children says 20 percent of student body had enterovirus. ... Enterovirus 68 has been sweeping through schools in 11 states this week. But a special school in Denver for mostly asthmatic ... Enterovirus Hits Special School for Kids With Asthma. A Denver school says 20 percent of students contracted the virus. ... Colorado is among nearly a dozen states to have confirmed cases of the rare enterovirus that starts out like the common cold ...