Rare AU-1-Like G3P[9] Human Rotaviruses with a Kun-Like NSP4 Gene Detected in Children with Diarrhea in Italy

Phylogenetic analysis of deduced amino acid sequence of the VP7 (a), VP4 (b), VP6 (c), and NSP4 (d) genes. The phylogeny was inferred by the neighbor-joining method and by use of the Kimura two-parameter model as the method of substitution. The statistical significance was estimated by bootstrap analysis with 1,000 pseudoreplicate data sets. The origins of the rotavirus strains are indicated as follows: hu, human; fe, feline; ca, canine; eq, equine; si, simian; la, lapine; bo, bovine; po, porcine; mu, murine; and av, avian. In panel a, strains with atypical positions in the VP7 tree are highlighted in boldface.