Identification of a familial cluster of pulmonary Mycobacterium bovis disease.

Setting: Local public health department.

Design: Retrospective review of a cluster of three pulmonary Mycobacterium bovis cases occurring in a family, with genotyping of M. bovis strains isolated from the family members.

Misidentification of unusual Aeromonas species as members of the genus Vibrio: a continuing problem.

Two unusual cases of Aeromonas infection are described, one associated with bacteremia (Aeromonas schubertii) and another in which the organism was recovered from an infected gall bladder (Aeromonas veronii biotype veronii). These strains were initially identified as Vibrio damsela and Vibrio cholerae by the Vitek and API 20E systems, respectively. Use of appropriate screening tests and familiarity with the newer Aeromonas species could prevent initial misidentifications and potential public health consequences.