Nosematosis, a Microsporidial Infection of Rodents and Other Animals, Including Man

Abstract
The widely distributed protozoon parasite "Encephalitozoon" was proved to be a microsporidian by (a) the characters of its developmental cycle, and (b) its fine structure as demonstrated by electron microscopy. It is suggested that the correct name of the organism is Nosema cuniculi (Levaditi et al., 1923) as found in rats, rabbits, and man. The potential importance of nosematosis as a zoonosis is emphasized. Transmission is thought to take place from a rodent source to man, with the production of an acute illness accompanied by cerebral or generalized symptoms.