Table 2

Comparison of evolutionary rates among different hosts

Av1

Av2

^awithin each host

Evolutionary rate (number of substitutions/site/year)

5.76 × 10^-4

1.63 × 10^-4

Hu1

7.34 × 10^-4

0.020

< 0.001

Hu2

12.8 × 10^-4

< 0.001

< 0.001

< 0.001

Sw1

9.23 × 10^-4

< 0.001

< 0.001

Sw2

18.4 × 10^-4

< 0.001

< 0.001

< 0.001

CE

5.40 × 10^-4

0.795

0.007

List of P-values for differential evolutionary rates.

^aP-values for lineages of same host: Hu1 vs. Hu2 and Sw1 vs. Sw2.

Bold values are those deemed to show significantly positive selection (P < 0.05).

Furuse et al. Virology Journal 2009 6:67   doi:10.1186/1743-422X-6-67