[A study on phage analysis of two episodes of food poisoning caused by the same serotype of enteroinvasive Escherichia coli].
The strains of EIEC serotype O28ac:K73 (B):H-were isolated from two episodes of food poisoning in Beijing during July to September in 1984. All strains were examined by E. coli K12 and found that they possessed the ability to produce the same colicin and same phage sensitivity pattern to eight phages isolated from contaminated water in Beijing area. These characteristics were different from reserved strains O28ac and other strains of E. coli. It indicated that two episodes were caused by the same phage type of O28ac:K73 (B):H-and proved the local outbreak was caused by same strain in western area of Beijing. The authors discussed in detail. The differentiation methods for plaque formation produced by colicin and phage.
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D000328:Adult; D001434:Bacteriophage Typing; D002648:Child; D002681:China / Q000453:epidemiology; D004196:Disease Outbreaks; D004531:Eggs / Q000506:poisoning*; D004926:Escherichia coli / Q000145:classification* / Q000302:isolation & purification; D005516:Food Microbiology; D006801:Humans