Naylor Stuart W, Flockhart Allen, Nart Pablo, Smith David G E, Huntley John, Gally David L, Low J Christopher
Animal Health Group, Scottish Agricultural College, Edinburgh EH9 3JG, UK.
Appl Environ Microbiol. 2007 Jun;73(11):3765-7. doi: 10.1128/AEM.02670-06. Epub 2007 Apr 20.
Enterohemorrhagic Escherichia coli O157:H7 has a natural reservoir in the intestinal tracts of cattle. Colonization is asymptomatic and transient, but it is not clear if protective immunity is induced. This study demonstrates that prior colonization induces humoral immune responses to bacterial antigens and reduces bacterial shedding after experimental challenge with the homologous strain.
肠出血性大肠杆菌O157:H7在牛的肠道中有天然宿主。定植是无症状且短暂的,但尚不清楚是否会诱导保护性免疫。本研究表明,先前的定植会诱导对细菌抗原的体液免疫反应,并减少同源菌株实验性攻击后的细菌排泄。