Figure 4. Serotype distribution in Malaysia. (A) National data 2000-2012 [3,12]. (B) 2012 data (to 12 July 2012) by state via the Sentinel Surveillance System [12]. One patient in Sarawak was infected with DENV-1 (not shown on graph). National data (A) demonstrated that the dominant DENV serotypes circulating in the country changed continually throughout the period of 2000 to 2011. DENV-4 was less prevalent that the other three serotypes and constituted