Any of a group of picornaviruses, including polioviruses, coxsackieviruses, and echoviruses, that infect the gastrointestinal tract and can spread to nervous system.

【生物】肠病毒。肠病毒是一群小核醣核酸病毒(picornavirus)的总称，包括小儿麻痹病毒、克沙奇病毒及依科病毒，可经由肠胃道传染，甚至感染神经系统。