Ehrlichiosis in a moose calf in Norway

A case of granulocytic ehrlichiosis in a moose calf (Alces alces) in Norway is described. The animal was heavily infested with ticks (Ixodes ricinus), and died from a Klebsiella pneumoniae septicemia. Examination of blood sme ars from the calf revealed cytoplasmic inclusions (morulae) typical of infe ction with Ehrlichia phagocytophila in the granulocytes. Ehrlichia sp. was detected by polymerase chain reaction (PCR) in blood from the calf, and in the ticks. Sequence determination identified it as E. phagocytophila. This is the first report of ehrlichiosis in moose.