Non-polio enteroviruses are very common viruses that can affect anyone. Infants, children, and teenagers are more likely to get infected and become sick. That's because they do not yet have immunity (protection) from previous exposures to the viruses.
Most people who get infected with non-polio enteroviruses do not get sick, or they may have mild illness, like the common cold.
Enterovirus D68 (EV-D68) is one of many non-polio enteroviruses. This virus was first identified in California in 1962, but it has not been commonly reported in the United States.
EV-D68 can cause mild to severe respiratory illness.