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Galat M, Moré G, Frey CF, Kovalenko G, Maliuk I, Halka I, Sytiuk M, Bezymennyi M, Galat V, Jokelainen P. Seroprevalence of Toxoplasma gondii in wild boars ( Sus scrofa) hunted in Ukraine. Int J Parasitol Parasites Wildl 2024; 23:100901. [PMID: 38274348 PMCID: PMC10809072 DOI: 10.1016/j.ijppaw.2023.100901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 12/23/2023] [Accepted: 12/23/2023] [Indexed: 01/27/2024]
Abstract
Toxoplasma gondii is an important zoonotic parasite worldwide, but it has received limited attention in Ukraine. A seroepidemiological study was conducted and samples from 452 wild boars that had been hunted in 2006-2011 in 23 of the 25 regions of Ukraine were tested to estimate T. gondii seroprevalence. A locally available commercial enzyme-linked immunosorbent assay (ELISA) was used for the investigation. Additionally, we tested 92 of the sera using a widely used commercial multi-species ELISA and an indirect immunofluorescence antibody test (IFAT). With the locally available ELISA, 35 of the 452 wild boars tested positive, yielding a seroprevalence estimate of 7.7% (95% confidence interval 5.5-10.5). The seropositive wild boars originated from eight of the regions. Using the majority criteria, 10/92 samples tested using both ELISAs and the IFAT were considered positive, yielding an estimated seroprevalence of 10.9% within the subset of samples. The highest seroprevalence was observed in wild boars hunted in Luhans'k (30.0%), Odesa (17.7%) and Kharkiv (12.7%). Seroprevalence was higher in older animals (13.3% for age group >12 months and 7.7% for age group ≤12 months). This is the first seroepidemiological study of T. gondii in wild boars in Ukraine. Assuming that seropositivity indicates presence of infectious parasites in the tissues, eating undercooked meat of wild boars hunted in Ukraine could be a potential source of infection to other hosts, including humans.
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Affiliation(s)
- Maryna Galat
- Institute of Parasitology, Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty University of Bern, Länggassstrasse 122, 3012, Bern, Switzerland
- Faculty of Veterinary Medicine, National University of Life and Environmental Sciences of Ukraine, Heroiv Oborony Str. 15, 03041, Kyiv, Ukraine
| | - Gaston Moré
- Institute of Parasitology, Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty University of Bern, Länggassstrasse 122, 3012, Bern, Switzerland
| | - Caroline F. Frey
- Institute of Parasitology, Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty University of Bern, Länggassstrasse 122, 3012, Bern, Switzerland
| | - Ganna Kovalenko
- Institute of Veterinary Medicine of the National Academy of Agrarian Sciences of Ukraine, Donetska Str. 30, 03151, Kyiv, Ukraine
- Division of Virology, Department of Pathology, University of Cambridge, Cambridge, UK
- Department of Biological Sciences, University of Alaska Anchorage, Anchorage, AK, USA
| | - Inna Maliuk
- Faculty of Veterinary Medicine, National University of Life and Environmental Sciences of Ukraine, Heroiv Oborony Str. 15, 03041, Kyiv, Ukraine
| | - Ihor Halka
- Institute of Veterinary Medicine of the National Academy of Agrarian Sciences of Ukraine, Donetska Str. 30, 03151, Kyiv, Ukraine
| | - Mykola Sytiuk
- Institute of Veterinary Medicine of the National Academy of Agrarian Sciences of Ukraine, Donetska Str. 30, 03151, Kyiv, Ukraine
| | - Maksym Bezymennyi
- Institute of Veterinary Medicine of the National Academy of Agrarian Sciences of Ukraine, Donetska Str. 30, 03151, Kyiv, Ukraine
| | - Vladyslav Galat
- Faculty of Veterinary Medicine, National University of Life and Environmental Sciences of Ukraine, Heroiv Oborony Str. 15, 03041, Kyiv, Ukraine
| | - Pikka Jokelainen
- Infectious Disease Preparedness, Statens Serum Institut, Artillerivej 5, 2300, Copenhagen S, Denmark
- Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 66, 00014, Helsinki, Finland
- Institute of Veterinary Medicine and Animal Sciences, Estonian University of Life Sciences, Kreutzwaldi 62, 51006, Tartu, Estonia
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Dubey JP, Cerqueira-Cézar CK, Murata FHA, Kwok OCH, Yang YR, Su C. All about toxoplasmosis in cats: the last decade. Vet Parasitol 2020; 283:109145. [PMID: 32645556 DOI: 10.1016/j.vetpar.2020.109145] [Citation(s) in RCA: 71] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 05/17/2020] [Accepted: 05/18/2020] [Indexed: 12/14/2022]
Abstract
Toxoplasma gondii infections are common in humans and animals worldwide. Toxoplasmosis continues to be of public health concern. Cats (domestic and wild felids) are the most important host in the epidemiology of toxoplasmosis because they are the only species that can excrete the environmentally resistant oocysts in feces. Cats can excrete millions of oocysts and a single cat can spread infection to many hosts. The present paper summarizes information on prevalence, persistence of infection, clinical signs, and diagnosis of T. gondii infections in domestic and wild cats for the past decade. Special emphasis is paid to genetic diversity of T. gondii isolates from cats. Review of literature indicates that a unique genotype (ToxoDB genotype #9 or Chinese 1) is widely prevalent in cats in China and it has been epidemiologically linked to outbreaks of clinical toxoplasmosis in pigs and deaths in humans in China; this genotype has rarely been detected in other countries. This review will be of interest to biologists, parasitologists, veterinarians, and public health workers.
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Affiliation(s)
- J P Dubey
- United States Department of Agriculture, Agricultural Research Service, Beltsville Agricultural Research Center, Animal Parasitic Diseases Laboratory, Beltsville, MD 20705-2350, USA.
| | - C K Cerqueira-Cézar
- United States Department of Agriculture, Agricultural Research Service, Beltsville Agricultural Research Center, Animal Parasitic Diseases Laboratory, Beltsville, MD 20705-2350, USA
| | - F H A Murata
- United States Department of Agriculture, Agricultural Research Service, Beltsville Agricultural Research Center, Animal Parasitic Diseases Laboratory, Beltsville, MD 20705-2350, USA
| | - O C H Kwok
- United States Department of Agriculture, Agricultural Research Service, Beltsville Agricultural Research Center, Animal Parasitic Diseases Laboratory, Beltsville, MD 20705-2350, USA
| | - Y R Yang
- Laboratory of Veterinary Pathology, College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, PR China
| | - C Su
- Department of Microbiology, University of Tennessee, Knoxville, TN 37996-0845, USA
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