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American Journal of Epidemiology Vol. 92, No. 4: 223-239
Copyright © 1970 by The Johns Hopkins University School of Hygiene and Public Health

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LEPTOSPIROSIS: LONG-TERM SURVEILLANCE ON AN ILLINOIS FARM1

PAUL R. SCHNURRENBERGER, LYLE E. HANSON and RUSSELL J. MARTIN2

2Dr. Schnurrenberger is Chief Public Health Veterinarian and Assistant State Epidemiologist for the Illinois Department of Public Health. Dr. Hanson is Head of the Department of Veterinary Pathology and Hygiene, University of Illinois, College of Veterinary Medicine, Urbana. Dr. Martin, the first year of this study was assigned from the National Communicable Disease Center, Atlanta, Georgia, to the Illinois Department of Public Health, Springfield. He is currently Regional Public Health Veterinarian with the Department

Reprint requests to Dr. Schnurrenberger, Illinois Department of Public Health, Springfield, III. 62706

Schnurrenberger, P. R. (Illinois Dept. Public Health, Springfield, III. 62706), L. E. Hanson and R. J. Martin. Leptospirosis: long-term surveillance on an Illinois farm. Amer, J. Epid., 1970, 92: 223–239.—The wild and domestic animals on an Illinois farm were studied for leptospiral infections over a 4-year span. During this period L. hardjo was isolated from 6 beef cattle, and L. icterohemorrhagiae was isolated from 3 dairy cattle and 2 swine. There was serologic evidence that beef and dairy cattle became infected with L. grippotyphosa during the four years. L. ballum was isolated from 24 house mice, 8 Norway rats, 1 opposum and 1 shrew; L. grippotyphosa from 1 raccoon; and L. icterohemorrhagiae from 198 Norway rats and 4 raccoons. L. icterohemorrhagiae also was isolated from the fetuses of 7 of 21 infected pregnant Norway rats. In 1968 L. icterohemorrhagiae was isolated from 19 of 20 rats collected from the hog fattening area. This was the year the same serotype was isolated from the swine and dairy cattle. The vehicle of transmission appeared to be water overflowing from hog watering tanks. Twelve isolates were made from water but none was identifiable as a known pathogenic serotype. There were no reactive sera among 150 persons tested.

animals; Leptospira; leptospirosis; serology

1This investigation was supported in part by the Public Health Service Research Grant CCAI 00100 from the National Communicable Disease Center and by the Illinois Agricultural Experiment Station.


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