| isolation and characterization of circulating type 1 vaccine-derived poliovirus from sewage and stream waters in hispaniola. | twenty-one cases of acute flaccid paralysis (afp) were reported on the island of hispaniola in 2000. laboratory analysis confirmed the presence of circulating vaccine-derived poliovirus (cvdpv) type 1 in stool samples obtained from patients. as a complement to the active search for cases of afp, environmental sampling was conducted during november and december 2000, to test for cvdpv in sewage, streams, canals, and public latrines. fifty-five environmental samples were obtained and analyzed for ... | 2004 | 15031784 |