PREVALENCE OF NON-CHOLERA VIBRIOS IN CAVUM NASI AND PHARYNX OF DUCKS

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Abstract
Investigations among ducks on 10 different farms showed a high prevalence of Vibrio cholerae in cavum nasi and pharynx after the ducks were admitted to the open field. In no case was V. cholerae isolated from ducks which were never outside the houses. At least 6 serovars were isolated, O:54 being the most prevalent. All isolated strains produced a distinctive cytotoxic effect in Y1 adrenal [mouse tumor] cells and caused fluid accumulation in rabbit gut loops. Migratory birds were incriminated as the source of initial contamination.