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[Enterotoxicity of NAG vibrios]
Revista De Igiena, Bacteriologie, Virusologie, Parazitologie, Epidemiologie, Pneumoftiziologie. Bacteriologia, Virusologia, Parazitologia, Epidemiologia
|October 1, 1980
Summary
Most Vibrio NAG strains exhibit enterotoxigenic properties, particularly those from biochemical group I. These bacteria and their toxins show seasonal incidence, peaking in summer, and are more prevalent in fish and feces than in water.
Area of Science:
- Microbiology
- Bacteriology
- Environmental Health
Context:
- Vibrio NAG (non-O1/non-O139 Vibrio cholerae) are increasingly recognized as potential enteric pathogens.
- Understanding the prevalence and enterotoxigenicity of these bacteria is crucial for public health, especially in aquatic environments.
Purpose:
- To investigate the enterotoxigenic potential of Vibrio NAG strains isolated from various environmental samples.
- To determine the association between biochemical characteristics, seasonality, sample type, and enterotoxicity of Vibrio NAG.
Summary:
- Eighty-six out of 105 Vibrio NAG strains demonstrated enterotoxigenic properties using the rabbit intestinal loop ligation assay.
- Biochemical group I strains (97.4%) were significantly more enterotoxigenic than group II strains (71.4%).
- Enterotoxicity exhibited a clear seasonal pattern, with peak incidence from June to August, and was more frequent in fish and feces compared to water samples.
Impact:
- These findings highlight the seasonal risk associated with Vibrio NAG in aquatic ecosystems, particularly concerning fish and fecal contamination.
- The study suggests potential environmental factors or mechanisms that may induce or enhance Vibrio NAG enterotoxigenesis, warranting further investigation.