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BioMed Research International
Volume 2013, Article ID 231497, 6 pages
Research Article

Prevalence and Risk Factors of Toxoplasma gondii in Fattening Pigs Farm from Yucatan, Mexico

1Universidad Autónoma de Yucatán, FMVZ, Campus de Ciencias Biológicas y Agropecuarias, Carretera Mérida-Xmatkuil Km. 15.5, Apdo. Postal 4-116 Itzimná, 97100 Mérida, YUC, Mexico
2Universidad Autónoma de Yucatán, Centro de Investigaciones Regionales “Dr. Hideyo Noguchi” Unidad Biomédica, CA. Biomedicina de Enfermedades Infecciosas y Parasitarias, Laboratorio de Biología Celular, Avenida Itzáes No. 490 x Calle 59 Colonia Centro, 97000 Mérida, YUC, Mexico

Received 25 January 2013; Revised 15 May 2013; Accepted 15 May 2013

Academic Editor: María Sol Arias Vázquez

Copyright © 2013 A. Ortega-Pacheco et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The objective of this study was to estimate the prevalence and identify risk factors associated with the presence of Toxoplasma gondii in pig-fattening farms from Yucatan, Mexico. A cross-sectional study was conducted with a two-stage sampling. There were 429 pigs sampled from 39 farms randomly selected. Blood samples were collected to obtain DNA and serum. The presence of IgM and IgG antibodies was determined by indirect ELISA. Prevalence was estimated by diagnostic test. Potential risk factors to be included in a marginal logistic regression were tested by chi-square or Fisher. The prevalence of IgM and IgG was 92.5% (397/429) (CI 89.9–95.1%) and 95.8% (411/429) (CI 93.7–97.8%), respectively. Regarding PCR, a prevalence of 50.8% (218/429) (CI 45.9–55.6%) was found. The logistic regression showed an association with herd size and type of feeder ( ). The risk of a case in farms with ≤400 pigs was 27.9 times higher than in farms with >400 pigs. The manual feeder was a significant protective factor associated with the seropositive against T. gondii. Results indicate a high circulation of T. gondii in pig-fattening farms from Yucatan, finding an increased risk of infection for those farms with less than 400 animals and automatic feeders.