Two strains of Vibrio cholerae non-O1 possessing somatic (O) antigen factors in common with V. cholerae serogroup O139 synonym Bengal

• Published in: Current microbiology 1994-12, Vol.29 (6), p.331-333
• Main Authors: SHIMADA, T, ARAKAWA, E, ITOH, K, NAKAZATO, T, OKITSU, T, YAMAI, S, KUSUM, M, BALAKRISH NAIR, G, TAKEDA, Y
• Format: Article
• Language: English
• Subjects: Bacteriology; Biological and medical sciences; Fundamental and applied biological sciences. Psychology; Microbiology; Pathogenicity, virulence, toxins, bacteriocins, pyrogens, host-bacteria relations, miscellaneous strains; Vibrio cholerae
• ISSN: 0343-8651; 1432-0991
• DOI: 10.1007/BF01570225

Two strains (O22 reference strain, 169-68, and strain 490-93 isolated from a patient with diarrhea in Thailand) of Vibrio cholerae non-O1 possessing somatic (O) antigen factors in common with V. cholerae O139 synonym "Bengal" are described. The O antigens of these two strains were closely related to that of V. cholerae O139 in an a,b-a,c type of relationship, but were not completely identical with serogroup O139. Therefore, both these strains are not classified into the O139 serogroup of V. cholerae, because they have their own major antigens. As the strain 490-93 could not be placed into any of the 154 established O serogroups of V. cholerae, this strain was assigned to a new serogroup, O155. For practical use, the diagnostic antiserum prepared against the O139 reference strain (MO45, ATCC 51394) of V. cholerae must be absorbed with reference strains 169-68 and 490-93 representing serogroups O22 and O155 of V. cholerae to remove cross-reacting agglutinins of the O22 and O155 strains, respectively.