Abstract
A modified CAMP test was used to identify 973 Vibrio cholerae isolates by phenotype. Eltor and non-O1 strains were CAMP positive; classical strains were CAMP negative. Sausage-shaped zones of hemolysis of eltor strains were easily distinguished from narrower bands of non-O1 isolates. For O1 isolates, there was 100% agreement between the CAMP test and inhibition by polymyxin B.
Full text
PDF
Images in this article
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Bhattacharya M. K., Bhattacharya S. K., Garg S., Saha P. K., Dutta D., Nair G. B., Deb B. C., Das K. P. Outbreak of Vibrio cholerae non-O1 in India and Bangladesh. Lancet. 1993 May 22;341(8856):1346–1347. doi: 10.1016/0140-6736(93)90855-b. [DOI] [PubMed] [Google Scholar]
- Facklam R. R., Padula J. F., Wortham E. C., Cooksey R. C., Rountree H. A. Presumptive identification of group A, B, and D streptococci on agar plate media. J Clin Microbiol. 1979 Jun;9(6):665–672. doi: 10.1128/jcm.9.6.665-672.1979. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Figura N., Guglielmetti P. Differentiation of motile and mesophilic Aeromonas strains into species by testing for a CAMP-like factor. J Clin Microbiol. 1987 Jul;25(7):1341–1342. doi: 10.1128/jcm.25.7.1341-1342.1987. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Groves R. D., Welshimer H. J. Separation of pathogenic from apathogenic Listeria monocytogenes by three in vitro reactions. J Clin Microbiol. 1977 Jun;5(6):559–563. doi: 10.1128/jcm.5.6.559-563.1977. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Gubash S. M. Synergistic hemolysis phenomenon shown by an alpha-toxin-producing Clostridium perfingens and streptococcal CAMP factor in presumptive streptococcal grouping. J Clin Microbiol. 1978 Nov;8(5):480–488. doi: 10.1128/jcm.8.5.480-488.1978. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Köhler W. CAMP-like phenomena of Vibrios. Zentralbl Bakteriol Mikrobiol Hyg A. 1988 Nov;270(1-2):35–40. doi: 10.1016/s0176-6724(88)80139-1. [DOI] [PubMed] [Google Scholar]
- Lesmana M., Rockhill R. C. A CAMP phenomenon between Vibrio cholerae biotype El Tor and staphylococcal B-hemolysin. Southeast Asian J Trop Med Public Health. 1985 Jun;16(2):261–264. [PubMed] [Google Scholar]
- MURPHY J. M., STUART O. M., REED F. I. An evaluation of the CAMP test for the identification of Streptococcus agalactiae in routine mastitis testing. Cornell Vet. 1952 Jan;42(1):133–147. [PubMed] [Google Scholar]