TABLE 2.

Amino acid distance matrix for VP1 protein

TypeaDistance for type:
12345
20.21
30.280.29
40.280.290.35
50.240.250.300.23
BNI-670.220.270.270.290.28
  • a The following reference strains were used to define types: type 1, Harris (14) and 1086-99 (5); type 2, Williamson (13); type 3, A308-99 (15) and Can82853-01 (2); type 4, K251176-02 (6) and T75-4077 (5); type 5, CT86-6760 (formerly classified as type 2 [21]) (5) and T92-15 (5). Calculation was based on a 207-amino-acid fragment of the VP1 gene as described in reference 5, using the p-distance model in MEGA4. Distance values for types represented by more than one reference strain are based on average distances.