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Table 1 Composition of DENV genotypes circulated during the epidemic in 2013 and 2014

From: Epidemic resurgence of dengue fever in Singapore in 2013-2014: A virological and entomological perspective

Serotype Genotypes/clades 2013 2014
DENV-1 Genotype I 97 (7.6 %) 136 (8.9 %)
  Genotype II 04 (0.3 %) 0 (0 %)
  Genotype IIIa 669 (52.7 %) 1,014 (66.2 %)
DENV-2 Asian I 0 (0 %) 01 (0.1 %)
  Cosmopolitan 02 (0.2 %) 12 (0.8 %)
  Cosmopolitan Clade I 28 (2.2 %) 11 (0.7 %)
  Cosmopolitan Clade 1a 151 (11.9 %) 13 (0.8 %)
  Cosmopolitan Clade 1b 33 (2.6 %) 269 (17.6 %)
  Cosmopolitan Clade III 74 (5.8 %) 0 (0 %)
  Cosmopolitan Clade V 12 (0.9 %) 0 (0 %)
  Cosmopolitan Indian 32 (2.5 %) 28 (1.8 %)
DENV-3 Genotype I 02 (0.2 %) 26 (1.7 %)
  Genotype II 03 (0.2 %) 01 (0.1 %)
  Genotype III 128 (10.1 %) 16 (1 %)
DENV-4 Genotype I 01 (0.1 %) 01 (0.1 %)
  Genotype II 34 (2.7 %) 03 (0.2 %)
Total   1,270 1,531
  1. aincludes epidemic strains in 2013 (n = 666) and 2014 (n = 1,010)
  2. The proportion of each genotype among all genotyped cases for the respective year is shown within brackets. The phylogeny of genotypes and clades of DENV serotypes is given in Fig. 4a and b