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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