U.S. flag

An official website of the United States government


Main content area

Findings of mycobacteria in insectivores and small rodents

Fischer, O., Mátlová, L., Bartl, J., Dvorská, L., Melichárek, I., Pavlík, I.
Folia microbiologica 2000 v.45 no.2 pp. 147-152
Apodemus flavicollis, Crocidura, Microtus arvalis, Mus musculus, Sorex araneus, cattle, herds, insectivores, insects, larvae, livestock breeding, lymph nodes, mice, monitoring, paratuberculosis, people, serotypes, shrews, straw, swine
The organs of 30 insectivorous mammals and 62 rodents from areas inhabited by people or livestock where cattle paratuberculosis or mycobacterial infections of swine had been found to occur were examined by cultivation during the monitoring of occurrence and spread of mycobacterioses in cattle and swine. Mycobacteria were found in the organs of 3 insectivores (10%) and 6 rodents (9.7%). Mycobacterium chelonae was isolated from the organs of the lesser white-toothed shrew (Crocidura suaveolens) and the common vole (Microtus arvalis), and M. vaccae and M. avium subsp.avium (IS901 ⁺, serotype 1) from the organs of the common shrew (Sorex araneus). M. avium subsp.avium (IS901 ⁺, serotype 1) was also isolated from the organs of the yellow-necked mouse (Apodemus flavicollis). Slow-growing mycobacteria of group III (according to Runyon) were isolated from the organs of the mouse (Mus musculus sensu lato) and the yellow-necked mouse (A. flavicollis). These findings had no connection with the epizootological situation in the nearby livestock. M. fortuitum was isolated from the organs of the common vole (M. arvalis) caught in a field within easy reach of a swine breeding heard. M. fortuitum was also identified in the lymph nodes and droppings of this swine herd, as well as in the straw, scrapings from the floor of stalls, troughs and banisters, as well as from larvae and imagoes of dipterous insects. These results demonstrate the possibility that insectivores and small rodents can spread the causative agents of mycobacteria in wild and domestic animals.