Psittacosis Complement-Fixing Antibodies in Sera from Fauna of the Great Salt Lake Desert of Utah *

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Abstract
Summary A total of 2,427 wild mammal and bird sera obtained from animals trapped in the desert region of western Utah was tested for the presence of psittacosis group complement-fixing antibodies. Of these, 51 were seropositive at titers of 1:16 to 1:128. The positive sera were from jackrabbits, Ord and chisel-toothed kangaroo rats, antelope squirrels, deer mice, grasshopper mice, desert wood rats, a western harvest mouse, a cottontail rabbit, a rock squirrel, a house cat, a mountain lion, a mule deer and a domestic pigeon. The psittacosis agent was isolated from the domestic pigeon only, although mammalian tissues were also examined for the organism. The possibility of a nonspecific serological reaction in the positive mammalian sera is discussed.

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