Groups and Serotypes Picornaviridae(小RNA病毒科) a At least 71 serotypes, divided into 4 subgroups ◆ Polioviruses(脊髓灰质炎病毒) ◆ oxsackie viruses(柯萨奇病毒) ◆ Echoviruses(埃可病毒) ◆ New enteroviruses(新肠道病毒) . more recently, new enteroviruses subtype have been allocated sequential numbers(68-71)Groups and Serotypes ◼ Picornaviridae（小RNA病毒科） ◼ At least 71 serotypes, divided into 4 subgroups ◆Polioviruses （脊髓灰质炎病毒） ◆Coxsackie viruses（柯萨奇病毒） ◆Echoviruses（埃可病毒） ◆New enteroviruses（新肠道病毒） ❖ more recently, new enteroviruses subtype have been allocated sequential numbers (68-71))