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Table 1 Basic population genetics summary of the data sets of the pre-vaccination and post-vaccination eras.

From: Evidence of recombination among early-vaccination era measles virus strains

 

Danish early-vaccination era data set

Global post-vaccination era data set

Length of sequences

800

800

Number of sequences

18

40

Average number of differences

12.2

31.0

# synonymous substitutions

26

131

# non-synonymous substitutions

32

71

Average Pi (nucleotide diversity)

  

1. all sites

0.014

0.040

2. synonymous sites

0.030

0.109

3. non-synonymous sites

0.009

0.019

Transition/transversion bias

2.2

9.4

Codon usage bias (ENC)

53

55