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  • Title: Wild waterfowl as potential vectors of Vibrio cholerae and Aeromonas species.
    Author: Laviad-Shitrit S, Izhaki I, Arakawa E, Halpern M.
    Journal: Trop Med Int Health; 2018 Jul; 23(7):758-764. PubMed ID: 29733476.
    Abstract:
    OBJECTIVE: To study the hypothesis that migratory waterfowl are possible disseminators of Vibrio cholerae and Aeromonas. METHODS: We monitored the presence of V. cholerae and Aeromonas in three wild waterfowl species. RESULTS: V. cholerae and Aeromonas species were isolated and identified from intestine samples of little egrets and black-crowned night herons. Only Aeromonas species were isolated from black-headed gulls. The majority of Aeromonas isolates were A. veronii. Twenty-three V. cholerae serogroups were identified. V. cholerae serogroup O1 was found in the intestine DNA extractions from four little egrets and black-crowned night herons; six birds carried cholera toxin subunit A gene. CONCLUSION: Wild waterfowl species may carry pathogenic V. cholerae O1 and non-O1 serogroups and Aeromonas species in their intestine. The migration of waterfowl is a potential mechanism for global distribution of V. cholerae and Aeromonas.
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