Any of a number of retroviruses of the family Picornaviridae, inhabiting the gastrointestinal tract and associated with various diseases, such as viral meningitis, mild respiratory infections, and severe diarrhea in newborns.

• 艾柯病毒任一种属于小核糖核酸病毒科的逆转录酶病毒，寄生于胃肠道内，与许多疾病有关，如病毒性脑膜炎、轻微呼吸道感染和严重的新生儿腹泻等