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Table 3 Codon usage bias in dengue virus

From: Nucleotide substitutions in dengue virus serotypes from Asian and American countries: insights into intracodon recombination and purifying selection

DENV-1 RSCU > 1 in Asian DENV RSCU < 1 in Asian DENV p value
RSCU > 1 in American DENV 91 160 0.02
RSCU <1 in American DENV 193 112  
DENV-2 RSCU > 1 in Asian DENV RSCU < 1 in Asian DENV  
RSCU > 1 in American DENV 35 121 0.000004
RSCU <1 in American DENV 155 79  
DENV-3 RSCU > 1 in Asian DENV RSCU < 1 in Asian DENV  
RSCU > 1 in American DENV 80 132 0.08
RSCU <1 in American DENV 138 116  
DENV-4 RSCU > 1 in Central American DENV RSCU <1 in South American DENV  
RSCU > 1 in Central American DENV 5 13 0.004
RSCU <1 in South
American DENV
22 16  
  1. Number of synonymous codons that are used either more than expected (frequent) or less than expected (rare) between Asian and American isolates of DENV serotype 1, 2 and 3 (or between South and Central American isolates of DENV4).