Abstract
Bordetella bronchiseptica, isolated from rodent nasopharyngeal swabs, failed to produce characteristic colonies after 24 hours incubation at 37°C. 4-7 days incubation at 37°C was required to achieve positive motility test results, when isolates later identified as B. bronchiseptica were tested by Craigie tube and soft agar stab methods. The biochemical tests used to identify suspected B. bronchiseptica are specified.