Sources and reservoirs of Toxoplasma gondii infection on 47 swine farms in Illinois

J. P. Dubey, R. M. Weigel, A. M. Siegel, P. Thulliez, U. D. Kitron, M. A. Mitchell, A. Mannelli, N. E. Mateus-Pinilla, S. K. Shen, O. C.H. Kwok, K. S. Todd

Research output: Contribution to journalArticle

Abstract

Field studies were conducted on 47 swine farms in Illinois during 1992 and 1993 to identify sources and reservoirs of Toxoplasma gondi infection. Blood samples were obtained from swine and from trapped wildlife. Serum antibodies to T. gondii were determined using the modified agglutination test, incorporating mercaptoethanol. Antibodies to T. gondii (titer ≥ 25) were found in 97 of 4,252 (2.3%) finishing pigs, 395 of 2,617 (15.1%) sows, 267 of 391 (68.3%)cats, 126 of 188 (67.0%) raccoons, 7 of 18 (38.9%) skunks, 29 of 128 opossums (22.7%), 6 of 95 (6.3%) rats, 3 of 61 (4.9%) white-footed mice (Peromyscus sp.), and 26 of 1,243 (2.1%) house mice (Mus musculus). Brains and hearts of rodents trapped on the farm were bioassayed in mice for the presence of T. gondii. Toxoplasma gondii was recovered from tissues of 7 of 1,502 (0.5%) house mice, 2 of 67 (3.0%) white-footed mice, and 1 of 107 (0.9%) rats. Feces of 274 cats trapped on the farms and samples of feed, water, and soil were bioassayed in mice for the presence of T. gondii oocysts. Toxoplasma gondii was isolated from 2 of 491 (0.4%) feed samples, 1 of 79 (1.3%) soil samples, and 5 of 274 (1.8%) samples of cat feces. All mammalian species examined were reservoirs of T. gondii infection. All farms had evidence of T. gondii infection either by detection of antibodies in swine or other mammalian species, or by detection of oocysts, or by recovery from rodents by bioassay. The possibility of transmission of T. gondii to swine via consumption of rodents, feed, and soil was confirmed.

Original languageEnglish (US)
Pages (from-to)723-729
Number of pages7
JournalJournal of Parasitology
Volume81
Issue number5
DOIs
StatePublished - Nov 6 1995

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Toxoplasmosis
Toxoplasma
Toxoplasma gondii
Swine
farm
rodent
antibody
farms
swine
Peromyscus
feces
infection
Mus musculus
Rodentia
Cats
Soil
Oocysts
soil
Peromyscus leucopus
rodents

ASJC Scopus subject areas

  • Parasitology
  • Ecology, Evolution, Behavior and Systematics

Cite this

Dubey, J. P., Weigel, R. M., Siegel, A. M., Thulliez, P., Kitron, U. D., Mitchell, M. A., ... Todd, K. S. (1995). Sources and reservoirs of Toxoplasma gondii infection on 47 swine farms in Illinois. Journal of Parasitology, 81(5), 723-729. https://doi.org/10.2307/3283961

Sources and reservoirs of Toxoplasma gondii infection on 47 swine farms in Illinois. / Dubey, J. P.; Weigel, R. M.; Siegel, A. M.; Thulliez, P.; Kitron, U. D.; Mitchell, M. A.; Mannelli, A.; Mateus-Pinilla, N. E.; Shen, S. K.; Kwok, O. C.H.; Todd, K. S.

In: Journal of Parasitology, Vol. 81, No. 5, 06.11.1995, p. 723-729.

Research output: Contribution to journalArticle

Dubey, JP, Weigel, RM, Siegel, AM, Thulliez, P, Kitron, UD, Mitchell, MA, Mannelli, A, Mateus-Pinilla, NE, Shen, SK, Kwok, OCH & Todd, KS 1995, 'Sources and reservoirs of Toxoplasma gondii infection on 47 swine farms in Illinois', Journal of Parasitology, vol. 81, no. 5, pp. 723-729. https://doi.org/10.2307/3283961
Dubey JP, Weigel RM, Siegel AM, Thulliez P, Kitron UD, Mitchell MA et al. Sources and reservoirs of Toxoplasma gondii infection on 47 swine farms in Illinois. Journal of Parasitology. 1995 Nov 6;81(5):723-729. https://doi.org/10.2307/3283961
Dubey, J. P. ; Weigel, R. M. ; Siegel, A. M. ; Thulliez, P. ; Kitron, U. D. ; Mitchell, M. A. ; Mannelli, A. ; Mateus-Pinilla, N. E. ; Shen, S. K. ; Kwok, O. C.H. ; Todd, K. S. / Sources and reservoirs of Toxoplasma gondii infection on 47 swine farms in Illinois. In: Journal of Parasitology. 1995 ; Vol. 81, No. 5. pp. 723-729.
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