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Klun, M. Vujani\u0107, H. Yera, et al. \"Veterinary Research.\" 42, \"Toxoplasma gondii infection in slaughter pigs in Serbia: Seroprevalence and demonstration of parasites in blood.\" 17 (2011)","DOI":"10.1186\/1297-9716-42-17"},{"key":"2","doi-asserted-by":"crossref","unstructured":"K. Boyer, D. Hill, E. Mui, et al. \"Clinical Infectious Diseases.\" 53, \"Unrecognized ingestion of Toxoplasma gondii oocysts leads to congenital toxoplasmosis and causes epidemics in North America.\" 1081 (2011)","DOI":"10.1093\/cid\/cir667"},{"key":"4","doi-asserted-by":"crossref","unstructured":"J. P. Dubey, \"BMJ.\" 321, \"Sources of Toxoplasma gondii infection in pregnancy. Until rates of congenital toxoplasmosis fall, control measures are essential.\" 127 (2000)","DOI":"10.1136\/bmj.321.7254.127"},{"key":"6","doi-asserted-by":"crossref","unstructured":"J. P. Dubey, D. S. Lindsay, C. A. 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