Brucella suis biotype 4: a case of granulomatous nephritis in a barren ground caribou (Rangifer tarandus groenlandicus L.) with a review of the distribution of rangiferine brucellosis in Canada.

Severe granulomatous nephritis caused by Brucella suis biotype 4 was found in a barren ground caribou (Rangifer tarandus groenlandicus) from Northwest Territories, Canada. A review of the distribution of human and animal cases of brucellosis in northern Canada indicated that B. suis biotype 4 is distributed widely and is probably enzootic in most Canadian caribou herds.