Phylogenetic analysis of the nucleic acid sequence of the 10 new complete VP1, VP2 and VP3 sequences from Anhui (AN) and Jiangsu (JS) provinces, China, and the 55 relevant VP1, VP2 and VP3 sequences currently available in GenBank. Values ≥ 70 are indicated on the branches (as percentages). Sequences from the present study (colored closed symbols) are named as PP-China, where PP is the area of origin. Sequences from GenBank were given the country name followed by accession number. The four major groups were identified as A, B, C and D.