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目的:了解幽门螺杆菌(Hp)在外环境的存活力,以及其流行病学意义.方法:通过细菌学培养.观察Hp在人工污染的牛奶和自来水中的繁殖和存活情况.结果:不论是保存于4℃抑或室温(25℃),Hp均不能在牛奶和自来水中繁殖;随着保存日期的延长,牛奶和自来水中的Hp复活菌落数逐渐减少;4℃时,Hp在牛奶中存活可长达10d,在自来水中则仅4d左右.电镜观察发现,不可复活的Hp转化成了球形.结论:虽然Hp在牛奶中并不增殖,但由于生存时间较长,故牛奶作为媒介物在Hp的传播上具有一定的流行病学意义.“,”To investigate survival ability of Helicobacter Pylori(HP) in the environment and its epidemiological implications. METHOD: The multiplication and survival of HP in artificially contaminated milk and tap water were observed. RESULTS:The results showed that HP did not multiply in milk and tap water,either at 4℃ or room temperature(25℃),but survived with a steady decrease of the colony forming units in ten days when milk was stored at 4℃. However,HP remained viable for culture only for 4 days in tap water even at 4℃ storage. Thecoccoid form of HP was found by electron microscopy in tap water which was kept at 4℃ for 7 days. CONCLU SION:Milk will act as the vehicle of Hp transmission if it was contaminated.