relative frequency of human rotavirus vp4 (p) genotypes recovered over a ten-year period from south african children with diarrhea. | the relative frequency and distribution of the vp4 (p) genotypes of 227 human rotavirus field strains were investigated in south africa. the stool samples were collected between 1984-1993 from infants and young children with diarrhea at ga-rankuwa hospital, pretoria, south africa. the rna was extracted from stools, heat denatured, and dot blotted onto nylon membranes. the blots were hybridized to pcr-generated, 32p radio-labelled vp4-specific probes (corresponding to the hyperdivergent region of ... | 1995 | 8551250 |