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Occurrence, distribution, and associations of O and H serogroups, colonization factor antigens, and toxins of enterotoxigenic Escherichia coli Wolf MKClin Microbiol Rev 1997[Oct]; 10 (4): 569-84Enterotoxigenic Escherichia coli (ETEC) is a leading cause of infectious diarrhea worldwide. Four categories of antigens have been commonly studied: O serogroup, H serogroup, colonization factor antigens (CFA), and toxins. A database has been complied from published reports of nearly 1,000 ETEC isolates from 18 locations and analyzed to determine the occurrence, distribution, and associations of O serogroup, H serogroup, CFA, and toxin type. Tables listing the associations of antigens are presented. This analysis documents the widespread nature and variety of ETEC. Even the most common combination of antigens, O6:H16 CFA/II LTST, accounted for only 11% of the ETEC isolates in the database. It was isolated from 12 locations. Many phenotypes occurred only once. CFA detection based on enzyme-linked antibodies with polyclonal sera is suggested as the preferred assay. A combination of CFA and toxin-based antigens is suggested as the most practical vaccine.|*Escherichia coli Proteins[MESH]|*Fimbriae Proteins[MESH]|Antigens, Bacterial/*analysis/immunology/metabolism[MESH]|Bacterial Proteins/*analysis/immunology/metabolism[MESH]|Bacterial Toxins/*analysis/immunology/metabolism[MESH]|Bacterial Vaccines/immunology[MESH]|Enterotoxins/analysis/immunology/metabolism[MESH]|Escherichia coli Infections/*classification/epidemiology/microbiology[MESH]|Escherichia coli/*immunology/*metabolism/pathogenicity[MESH]|Humans[MESH]|O Antigens/analysis/immunology/metabolism[MESH]|Serotyping[MESH] |
