Emerging Infectious Disease ISSN: 1080-6059

Two Imported Chikungunya Cases, Taiwan

Pei-Yun Shu*, Cheng-Fen Yang*, Chien-Ling Su*, Chung-Yu Chen*, Shu-Fen Chang*, Kun-Hsien Tsai*, Chia-Hsin Cheng*, and Jyh-Hsiung Huang*

Author affiliations: *Centers for Disease Control, Taipei, Taiwan, Republic of China;

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Figure

Phylogenetic relationships of chikungunya virus (CHIKV) isolates from 2 imported cases in Taiwan. The tree was constructed by the neighbor-joining method using partial nucleotide sequences of envelope protein 1 (E1) gene (255 bp) of 23 CHIKV strains. O’nyong-nyong (ONN) virus sequence was used as the outgroup virus. Bootstrap support values >75 are shown. The 2 imported CHIKV strains in Taiwan are designated by boldface type. Viruses were identified by using the nomenclature of virus/country/

Figure. Phylogenetic relationships of chikungunya virus (CHIKV) isolates from 2 imported cases in Taiwan. The tree was constructed by the neighbor-joining method using partial nucleotide sequences of envelope protein 1 (E1) gene (255 bp) of 23 CHIKV strains. O’nyong-nyong (ONN) virus sequence was used as the outgroup virus. Bootstrap support values >75 are shown. The 2 imported CHIKV strains in Taiwan are designated by boldface type. Viruses were identified by using the nomenclature of virus/country/strain/year of isolation/GenBank accession no. Scale bar indicates substitutions per site.

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