Identification of a Rough Strain of Escherichia coli O157:H7 That Produces No Detectable O157 Antigen |
| |
| Authors: | Peter Feng Robin C Sandlin Choong H Park Richard A Wilson and Mitsuaki Nishibuchi |
| |
| Institution: | Division of Microbiological Studies, Food and Drug Administration, Washington, D.C. 202041.; Department of Microbiology and Immunology, Uniformed Services University of the Health Sciences, Bethesda, Maryland 208142.; INOVA Fairfax Hospital, Falls Church, Virginia 220423.; Escherichia coli Reference Center, Pennsylvania State University, University Park, Pennsylvania 168024.; and Center for Southeast Asian Studies, Kyoto University, Kyoto, Japan 606-015. |
| |
| Abstract: | MA6, an O157:H7-like strain, did not react with most anti-O157 kits examined; however, it had the rfbE gene that is essential for O157 expression and carried O157:H7 virulence factors. Lipopolysaccharide analysis showed that MA6 is a rough strain that does not produce the O157 antigen, but genetically, it belongs in the O157:H7 clonal group. |
| |
| Keywords: | |
|
|
