TITLE

An Improved Technique for Isolation of Environmental Vibrio cholerae with Epidemic Potential: Monitoring the Emergence of a Multiple- Antibiotic--Resistant Epidemic Strain in Bangladesh

AUTHOR(S)
Faruque, Shah M.; Islam, M. Johirul; Ahmad, Qazi Shafi; Biswas, Kuntal; Faruque, A. S. G.; Nair, G. Balakrish; Sack, R. Bradley; Sack, David A.; Mekalanos, John J.
PUB. DATE
April 2006
SOURCE
Journal of Infectious Diseases;4/1/2006, Vol. 193 Issue 7, p1029
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Predicting cholera epidemics through monitoring the environment for the presence of pathogenic Vibrio cholerae is complicated by the presence in water of a large number of mostly nonpathogenic V. cholerae strains. V. cholerae strains causing recent cholera epidemics in Bangladesh carry the sulfamethoxazole-trimethoprim (SXT) element, which encodes resistance to several antibiotics. Here, we show that the use of a culture medium containing streptomycin, sulfamethoxazole, and trimethoprim (the antibiotic selection technique [AST]) can significantly enhance the isolation of environmental V. cholerae O1 with epidemic potential (P < .001). The AST was also used to monitor the recent emergence and spread of a new multiple-antibiotic-resistant strain of V. cholerae in Bangladesh. The results of this study support the hypothesis that pre-epidemic amplification of pathogenic V. cholerae occurs in the human host and leads to the start of an epidemic cycle dominated by a single clone of V. cholerae that spreads rapidly through environmental waters.
ACCESSION #
20302390

 

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