Detection of human rotaviruses which do not react with subgroup I- and II-specific monoclonal antibodies

Of 126 rotavirus-positive specimens, 7 could not be subgrouped (I or II). These strains showed a distinct reaction with a monoclonal antibody recognizing a common region on VP6, but they did not react with VP6 subgroup-specific monoclonal antibodies although they contained as much viral antigen as the subgrouped strains.