Dengue Virus Surveillance for Early Warning, Singapore
Kim-Sung Lee, Yee-Ling Lai, Sharon Lo, Timothy Barkham, Pauline Aw, Peng-Lim Ooi, Ji-Choong Tai, Martin Hibberd, Patrik Johansson, Seow-Poh Khoo, and Lee-Ching Ng
Author affiliations: Environmental Health Institute, Singapore (K.-S. Lee, Y.-L. Lai, S. Lo, L.-C. Ng); Tan Tock Seng Hospital, Singapore (T. Barkham); Genome Institute of Singapore, Singapore (P. Aw, M. Hibberd); Ministry of Health, Singapore (P.-L. Ooi); National Environment Agency, Singapore (J.-C. Tai, S.-P. Khoo); DSO National Laboratories, Singapore (P. Johansson)
Figure 1. Trends of monthly dengue cases in Singapore, 2005–2008, showing a switch in predominant serotype from dengue virus serotype 1 (DENV-1) to DENV-2 in January 2007 and cocirculation of all 4 serotypes with general dominance of DENV-1 and DENV-2 and lesser circulation of DENV-3 and DENV-4. *From ≈10% of all dengue cases.
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