| group a rotavirus in sewage samples from barcelona and cairo: emergence of unusual genotypes. | the presence of rotavirus strains in sewage samples from cairo, egypt (november 1998 to october 1999), and barcelona, spain (november 1998 to december 2002), was investigated by using a generic molecular detection method based on amplification of a vp6 gene fragment. overall, 85.7 and 66.9% of the sewage samples from cairo and barcelona, respectively, were positive. positive samples were characterized further, and vp7 and vp4 genotypes were determined. although 30% of the positive samples from c ... | 2003 | 12839761 |