Acta Parasitologica

, Volume 64, Issue 2, pp 295–299 | Cite as

First Report on Toxoplasma gondii Seroprevalence in Free-Ranging Pigs in Northeastern China

  • Qi Li
  • Si-Yuan Qin
  • Shuo Li
  • Peng Peng
  • Quan Zhao
  • Hong-Lin Jia
  • Chun-Ren WangEmail author
Original Paper



Toxoplasma gondii is the pathogen of toxoplasmosis, which affects a wide range of animal species and humans.

Materials and methods

In the present study, a serological investigation was undertaken to determine the seroprevalence of T. gondii infection in free-ranging pigs in northeastern China. A total of 806 serum samples were collected from free-ranging pigs in 6 cities in Liaoning, Jilin, and Heilongjiang Provinces.


Among them, 163 serum samples (20.22%) were detected T. gondii positive by indirect hemagglutination test (IHA). In each administrative district, the prevalence ranges from 12.99 to 22.22%. It was found that sample collection year and season were associated with T. gondii infection. Samples collected in 2015 and 2016 had had higher positive rate compared to those collected in 2017. Samples collected in summer and autumn also have higher positive rate than those in winter.


This is the first report on T. gondii seroprevalence in free-ranging pigs in northeastern China, which adds the epidemiological data of T. gondii infection in free-ranging pigs in China. These results indicated that free-ranging pigs in Liaoning, Jilin, and Heilongjiang Provinces are exposed to T. gondii, which is a significant threat to local pig industry as well as public health. It is necessary to take relevant comprehensive measures to prevent and control T. gondii infection in free-ranging pigs in these regions.


Toxoplasma gondii Seroprevalence Free-ranging pigs China Indirect Hemagglutination Assay (IHA) 



Project support was provided by State Key Laboratory of Veterinary Biotechnology Foundation (SKLVBF201704). No competing financial interests exist. The findings and conclusions in this report are those of the authors and do not necessarily represent the views of the funding agencies.


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Copyright information

© Witold Stefański Institute of Parasitology, Polish Academy of Sciences 2019

Authors and Affiliations

  • Qi Li
    • 1
    • 2
  • Si-Yuan Qin
    • 3
  • Shuo Li
    • 3
  • Peng Peng
    • 3
  • Quan Zhao
    • 4
  • Hong-Lin Jia
    • 2
  • Chun-Ren Wang
    • 1
    Email author
  1. 1.College of Animal Science and Veterinary MedicineHeilongjiang Bayi Agricultural UniversityDaqingPeople’s Republic of China
  2. 2.State Key Laboratory of Veterinary BiotechnologyHarbin Veterinary Research Institute, Chinese Academy of Agricultural SciencesHarbinPeople’s Republic of China
  3. 3.General Station for Surveillance of Wildlife Diseases and Wildlife Borne DiseasesState Forestry AdministrationShenyangPeople’s Republic of China
  4. 4.College of Animal Science and TechnologyJilin Agricultural UniversityChangchunPeople’s Republic of China

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