Epidemiological trends of the globally most common rotavirus genotype, G1P, were investigated in Hungary during a 16-year period by sequencing and phylogenetic analysis of the surface antigens. Antigen shift among epidemiologically major G1P strains was observed in 6 seasons, as indicated by changes in the sublineages of the G1 VP7 and the P VP4 genes. The temporal clustering of some rotavirus VP4 and VP7 gene sublineages and the periodic emergence and/or resurgence of previously unrecognized rotavirus sublineages in the study population suggest a dynamic nature for these common strains. Recently established international strain surveillance networks may help to identify and track the spread of epidemiologically important rotavirus strains across countries and continents
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