Epidemiologic evaluation of encephalitic listeriosis in goats

Gayle Christy Johnson, Carol Wolfgang Maddox, William Harold Fales, William Allmond Wolff, Richard Fox Randle, Jose Antonio Ramos, Helen Schwartz, Kim Michele Heise, Albert Lewis Baetz, Irene Varelas Wesley, Dean Edward Wagner

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Abstract

Objective - To evaluate host and environmental factors associated with the development of encephalitic listeriosis in goats. Design - Retrospective analysis of diagnostic laboratory records and survey of veterinarians and goat producers. Sample Population - 355 goat herds accessible through laboratory records; 38 veterinarians who treated goats and 76 goat producers. Procedure - Data regarding breed and use for goats affected with encephalitic listeriosis were obtained from surveys and case follow-up information. Listeria monocytogenes isolates from the brains of 7 affected goats were serotyped and subjected to DNA restriction analysis. Results - Odds ratio for the development of encephalitis listeriosis in Angora (mohair-producing) goats was 22.9 by use of diagnostic laboratory records. Surveys also revealed a high prevalence in herds of Angora and other breeds that subsisted on woody browse, although Angora goats feeding predominantly on hay or pasture were not affected. Listeria monocytogenes isolates from 4 Angora goats in 3 herds differed in DNA restriction patterns, although the pattern was identical in 3 other goats from another herd. Clinical Implications - Encephalitic listeriosis can be observed in all goat breeds, but a lifestyle of heavy browse consumption seems important to the development of disease in some herds.

Original languageEnglish (US)
Pages (from-to)1695-1699
Number of pages5
JournalJournal of the American Veterinary Medical Association
Volume208
Issue number10
StatePublished - May 15 1996

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ASJC Scopus subject areas

  • veterinary(all)

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Johnson, G. C., Maddox, C. W., Fales, W. H., Wolff, W. A., Randle, R. F., Ramos, J. A., Schwartz, H., Heise, K. M., Baetz, A. L., Wesley, I. V., & Wagner, D. E. (1996). Epidemiologic evaluation of encephalitic listeriosis in goats. Journal of the American Veterinary Medical Association, 208(10), 1695-1699.