Emerging Infectious Disease ISSN: 1080-6059

Entomologic and Virologic Investigation of Chikungunya, Singapore

Lee-Ching Ng

, Li-Kiang Tan, Cheong-Huat Tan, Sharon S.Y. Tan, Hapuarachchige C. Hapuarachchi, Kwoon-Yong Pok, Yee-Ling Lai, Sai-Gek Lam-Phua, Göran Bucht, Raymond T.P. Lin, Yee-Sin Leo, Boon-Hian Tan, Hwi-Kwang Han, Peng-Lim S Ooi, Lyn James, and Seow-Poh Khoo

Author affiliations: National Environment Agency, Singapore (L.-C. Ng, L.-K. Tan, C.-H. Tan, S.S.Y. Tan, H.C. Hapuarachchi, K.-Y. Pok, Y.-L. Lai, S.-G. Lam-Phua, G. Bucht, S.-P. Khoo); Tan Tock Seng Hospital, Singapore (R.T.P. Lin, Y.-S. Leo); Ministry of Health, Singapore (B.-H. Tan, H.-K. Han, P.-L. S. Ooi, L. James)

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Figure 1

Geographic and temporal distribution of 123 indigenous chikungunya cases in Singapore. Shading indicates the 7 cluster areas where entomologic investigation was carried out. Data include cases reported through September 2008. The arrows in the timeline shown below the map indicate the months of occurrence of the local outbreaks from the beginning of January to the end of September 2008. BSP, Bah Soon Pah Road; FR, Farrer Road; KW, Kranji Way; LI, Little India; ME, Mandai Estate; QS, Queen Street

Figure 1. Geographic and temporal distribution of 123 indigenous chikungunya cases in Singapore. Shading indicates the 7 cluster areas where entomologic investigation was carried out. Data include cases reported through September 2008. The arrows in the timeline shown below the map indicate the months of occurrence of the local outbreaks from the beginning of January to the end of September 2008. BSP, Bah Soon Pah Road; FR, Farrer Road; KW, Kranji Way; LI, Little India; ME, Mandai Estate; QS, Queen Street; SK, Sungei Kadut; TE, Teachers’ Estate.

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