| the vp7 genes of two g9 rotaviruses isolated in 1980 from diarrheal stool samples collected in washington, dc, are unique molecularly and serotypically. | in a retrospective study of archival diarrheal stool samples collected from 1974 to 1991 at children's hospital national medical center, washington, dc, we detected three genotype g9p[8] viruses in specimens collected in 1980, which represented the earliest human g9 viruses ever isolated. the vp7 genes of two culture-adapted 1980 g9 viruses were phylogenetically related closely to the lineage 2 g9 virus vp7 gene. unexpectedly, however, the vp7s of the 1980 g9 viruses were more closely related se ... | 2008 | 18234798 |