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直至七十年代,病毒性胃肠炎之存在仍依靠经动物和人体传代实验来推论,以及用粪便组织培养进行研究。研究所得的结果互有争议,有人认为某些肠道病毒和腺病毒是潜在肠道病原体,但有人说还缺乏确切的证据。对1968年发生在美国Ohio州Norwalk市的胃肠炎暴发流行进行的调查,表明是一种27nm病毒引起了这次流行。服用含Norwalk病原体的粪便滤液而受感染的成年志愿者可再现临床症状。从有症状和无症
Until the seventies, the existence of viral gastroenteritis still relied on animal and human passage experiments to infer, and stool tissue culture research. The results of the research are controversial. Some people think that certain enteroviruses and adenoviruses are potential enteric pathogens, but others say that there is still a lack of conclusive evidence. A survey of the 1968 outbreak of gastroenteritis in Norwalk, Ohio, showed that a 27-nm virus caused the epidemic. Adult volunteers infected with faecal filtrate containing Norwalk’s pathogen can reproduce clinical symptoms. From symptomatic and asymptomatic