title: Seroprevalence of Toxoplasma gondii in free-ranging wild boars hunted for human consumption in Estonia.
abstract: BACKGROUND
  Although the prevalence of human Toxoplasma gondii infections is high in Estonia, no information is available on the prevalence of infections in the local animal populations. Wild boars are a good indicator species for estimating the prevalence and spread of T. gondii and were thus investigated in this nationwide cross-sectional study. Volunteer hunters sampled cardiac or skeletal muscle of 471 wild boars legally hunted for human consumption in Estonia during the hunting season of 2012-2013. Serosanguineous meat juice samples were obtained from thawed tissue samples, diluted 1:40, and screened for specific anti-T. gondii IgG antibodies with a commercial direct agglutination test.
  
  
  RESULTS
  Almost one-quarter (113; 24%) of the wild boars examined were seropositive for T. gondii. The seroprevalence did not differ significantly between age groups or sexes. The seroprevalence was lowest in Viljandimaa, which is located in the southern part of Estonia. In other counties, the infection was evenly prevalent.
  
  
  CONCLUSIONS
  In Estonia, wild boars are commonly exposed to T. gondii, which is endemic and widespread. The consumption of raw or undercooked meat of Estonian wild boars may pose an infection risk to humans and other hosts.
authors.affiliation: Institute of Veterinary Medicine and Animal Sciences, Estonian University of Life Sciences, Kreutzwaldi 62, 51014, Tartu, Estonia. pikka.jokelainen@helsinki.fi.|Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 66, 00014, Helsinki, Finland. pikka.jokelainen@helsinki.fi.
authors.forename: Pikka
authors.initials: P
authors.lastname: Jokelainen
authors.affiliation: Institute of Veterinary Medicine and Animal Sciences, Estonian University of Life Sciences, Kreutzwaldi 62, 51014, Tartu, Estonia. kaisa.velstrom@eesti.ee.
authors.forename: Kaisa
authors.initials: K
authors.lastname: Velström
authors.affiliation: Institute of Veterinary Medicine and Animal Sciences, Estonian University of Life Sciences, Kreutzwaldi 62, 51014, Tartu, Estonia. brian.lassen@gmail.com.
authors.forename: Brian
authors.initials: B
authors.lastname: Lassen
mesh_terms: D000818:Animals; D000913:Antibodies, Protozoan / Q000032:analysis; D003430:Cross-Sectional Studies; D004957:Estonia / Q000453:epidemiology; D005260:Female; D016266:Food Parasitology; D006801:Humans; D007074:Immunoglobulin G / Q000032:analysis; D008297:Male; D008460:Meat / Q000469:parasitology*; D015995:Prevalence; D016036:Seroepidemiologic Studies; D034421:Sus scrofa; D013552:Swine; D013553:Swine Diseases / Q000453:epidemiology* / Q000469:parasitology; D014122:Toxoplasma / Q000302:isolation & purification*; D014124:Toxoplasmosis, Animal / Q000453:epidemiology* / Q000469:parasitology
chemical_list: D000913:Antibodies, Protozoan; D007074:Immunoglobulin G