Not all serotypes are equally antigenic and currently there is no easy way to determine whice ones are less antigenic and, therefore, should be in higher proportions in the vaccine.
当然，并非所有的血清型都具有完全相同的抗原性，不过由于目前尚无一种简单可靠的方法能够区分出各类毒株抗原性的高低，所以这些菌株都需在疫苗组成中占据较高份额。
All four dengue virus (DENV) serotypes were permanently in circulation, though the predominant serotype has alternated between DENV-3 and DENV-2 since 2000.
尽管2000年之后主导血清型在DENV - 3和DENV - 2之间交替，但是全部四种登革热病毒血清型一直在循环着。
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%，其它9个片段编码蛋白的同源性都在86%以上。
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%，其它9个片段编码蛋白的同源性都在86%以上。
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