The whole nucleotide sequence of D2V-HN89 envelope gene was 1? 464bp. Nucleotide and amino acid homology were 95% and 98% respectively between D2V-HN89 and D2V-NGC.

• D2V HN89株E基因核苷酸全长 146 4bp ,核苷酸和氨基酸序列与D2V NGC株的同源性分别为 95%25和 98%25,系统树分析显示其与登革 2型牙买加株及登革 2型巴西 90株的亲缘关系最近。