Polio is an enterovirus (lives and is replicated in our intestines) that is spread via fecal-oral transmission.
Polio is one of many viruses belonging to the "enterovirus" family.
enterovirus itself, with dozens of different types that affect humans, is another, as is—most famously—poliovirus.
The viral infection sending hundreds of Midwestern kids to the hospital is EV-68, a rather nasty strain of enterovirus.
This strain of enterovirus seems unusually provocative in irritating lower airways, thereby causing airway narrowing.
enterovirus en·ter·o·vi·rus (ěn'tə-rō-vī'rəs)
A virus of the genus Enterovirus. Also called enteric virus.
A genus of picornaviruses, including polioviruses, coxsackieviruses, and echoviruses, that infect the gastrointestinal tract and often spread to other areas of the body, especially the nervous system.