Article
Isolation of vaccine-derived type 1 polioviruses displaying similar properties to virulent wild strain Mahoney from sewage in Japan.
Journal of medical virology - 1 Nov 2002
Horie Hitoshi, Yoshida Hiromu, Matsuura Kumiko, Miyazawa Miwako, Wakabayashi Kengo, Nomoto Akio, Hashizume So
Abstract excerpt
Type 1, 2, and 3 vaccine-derived polioviruses were isolated from a sewage disposal plant located downstream of the Oyabe River in Toyama Prefecture, Japan, between October 1993 and September 1995. Neurovirulence was analyzed in 13 type 1 vaccine-derived strains, using mutant analysis by polymerase chain reaction and restriction enzyme cleavage (MAPREC). Nine strains (69%) were estimated to have marked...
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