Vertical transmission of Toxoplasma gondii in naturally infected ewes in the semiarid region of Brazil |
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| Institution: | 1. Laboratory of Immunology and Infectious-Contagious Diseases, Instituto Federal da Paraíba, Sousa, PB, Brazil;2. Laboratory of Transmissible Diseases, Universidade Federal de Campina Grande, Patos, PB, Brazil;3. Department of Preventive Veterinary Medicine and Animal Health, School of Veterinary Medicine and Animal Science, Universidade de São Paulo, São Paulo, SP, Brazil;4. Department of Morphology, Universidade Federal da Paraíba, João Pessoa, PB, Brazil;5. Postgraduate Program on Animal Health and Wellbeing, Universidade Santo Amaro (UNISA), São Paulo, SP, Brazil;1. Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran;2. Department of Parasitology and Mycology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran;3. Woldia University, Woldia, Ethiopia;4. Department of Medical Parasitology and Mycology, School of Medicine, Qazvin University of Medical Sciences, Qazvin, Iran;5. Department of Medical Parasitology and Mycology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran;6. Department of Medical Parasitology and Mycology, School of Medicine, Jiroft University of Medical Sciences, Jiroft, Iran;1. Department of Pathobiology, Science and Research Branch, Islamic Azad University, Tehran, Iran;2. Department of Microbiology, Pasteur Institute of Iran, Tehran, Iran;3. National Reference Laboratory for Plague, Tularemia and Q fever, Research Centre for Emerging and Reemerging infectious diseases, Pasteur Institute of Iran, Akanlu, Kabudar-Ahang, Hamadan, Iran;4. Department of clinical sciences, Sanandaj branch, Islamic Azad University, Sanandaj, Iran;5. Department of Epidemiology and Biostatics, Research Centre for Emerging and Reemerging infectious diseases, Pasteur Institute of Iran, Tehran, Iran;1. University of Veterinary and Pharmaceutical Sciences Brno, Faculty of Veterinary Hygiene and Ecology, Department of Biology and Wildlife Diseases, Palackého t?. 1946/1, 612 42 Brno, Czech Republic;2. Department of Biodiversity, University of Limpopo, Sovenga 0727, South Africa;3. INSERM, UMR_S 1094, Neuroépidémiologie Tropicale, Université de Limoges, 87025 Limoges, France;4. National Reference Centre for Toxoplasmosis, Biological Resource Center for Toxoplasma, Centre Hospitalier Universitaire de Limoges, Limoges, France;5. ARC-Animal Production Institute, Private Bag X2, Irene, 0062, South Africa;1. IFTM – Federal Institute of Education, Science and Technology of Triângulo Mineiro, Uberaba, Minas Gerais, Brazil;2. Department of Preventive Veterinary Medicine and Animal Reproduction, Faculty of Agricultural and Animal Sciences, São Paulo State University, Access Route Paulo Castellane, s/n, Jaboticabal, São Paulo, Brazil;3. CPPAR – Animal Health Research Center, Access Route Paulo Donatto Castellane, s/n, Jaboticabal, São Paulo, Brazil;4. Department of Veterinary Pathology, Faculty of Agricultural and Animal Sciences, São Paulo State University, Access Route Paulo Castellane, s/n, Jaboticabal, São Paulo, Brazil;1. Department of Animal Science, Universidade do Estado de Santa Catarina - UDESC, Chapecó, SC, Brazil;2. Department of Animal Science, Universidade Federal do Paraná – UFPR, Curitiba, PR, Brazil;3. Department of Microbiology and Parasitology, Universidade Federal de Santa Maria – UFSM, Santa Maria, RS, Brazil;4. Department of Veterinary Medicine, UDESC, Lages, SC, Brazil;5. Department of Large Animal Medicine, UFSM, Santa Maria, RS, Brazil |
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| Abstract: | To evaluate transplacental transmission of Toxoplasma gondii in naturally infected ewes, blood samples were collected from 55 pregnant ewes and their offspring, before ingestion of colostrum. From 16 offspring of positive ewes and nine offspring from negative ewes, blood samples were obtained after 48 h and 7, 14, 21, 28, 35, 42, 49 and 56 days after birth. T. gondii antibodies were detected in serum samples using the indirect fluorescence antibody test (IFAT ≥ 64). Four of the 30 positive ewes (13.3 %) had offspring positive for T. gondii before ingesting colostrum (vertical transmission). The colostrum antibody titers decreased every week, and only 20 % (2/10) of the lambs in continued to present detectable antibody titers until day 56 after birth. Therefore, vertical transmission of T. gondii in lambs was indication of occur and is an important route for transferring and maintaining the agent in sheep herds in the Brazilian semiarid region. |
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| Keywords: | Colostrum Lambs IFAT Toxoplasmosis Transplacental |
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