| one-year monthly survey of rotavirus, astrovirus and norovirus in three sewage treatment plants in beijing, china and associated health risk assessment. | to evaluate the presence and distribution of the three main viruses (rotavirus, astrovirus, and norovirus) responsible for human acute gastroenteritis in sewerage system an one-year study was carried out in beijing, china. a total of 96 samples of influent and effluents from three sewage treatment plants (stps) were collected from november 2006 to october 2007. silica was used to concentrate viral particles from water samples and a reverse transcriptase-nested polymerase chain reaction (rt-neste ... | 2011 | 21245573 |