Reovirus includes 3 serotypes.Homology of proteins encoded by S1 genome segment was less than 26% between serotypes, while that of viral proteins encoded by other 9 segments was all more than 86%.

• 呼肠病毒共有3个血清型,不同型之间S1片段编码蛋白的同源性小于26%25,其它9个片段编码蛋白的同源性都在86%25以上。