Abstract
Meat of domestic pigs and wild boars has been the significant source of emerged human trichinellosis in Lithuania, Latvia, and Estonia over the past two decades. However, there is very little known on the occurrence of Trichinella spp. in main wildlife reservoirs and its transmission in domestic and sylvatic cycles in these countries. The present study demonstrated considerably higher endemicity of Trichinella spp. in main sylvatic reservoirs (28.9–42% in foxes (Vulpes vulpes) and raccoon dogs (Nyctereutes procyonoides) in all three countries than previously reported. Molecular identification of Trichinella larvae from more than 500 sylvatic and domestic animals revealed four Trichinella species (Trichinella spiralis, Trichinella britovi, Trichinella nativa, and Trichinella pseudospiralis) sympatric in a relatively small area and several as the first records for the respective countries. The nonencapsulating T. pseudospiralis is found for the first time in the Eastern Europe. Sylvatic T. britovi was found in domestic pigs in Lithuania and Latvia (16 and 57.1%, respectively) and only in these countries, domestic T. spiralis was detected in sylvatic animals in areas where domestic trichinellosis was registered. The study suggests that transmission of Trichinella between domestic and sylvatic cycles in Lithuania and Latvia is favored by improper human behavior, e.g., pig and slaughter waste management.
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References
Anonymous (1996) Annual report of the Lithuanian National Veterinary Laboratory. State Food and Veterinary Service Vilnius
Baleišis R (2001) Fluctuations of red fox abundance in Lithuania. Theriol Litu 1:92–95
Bessonov AS (1994) Trichinellosis in CIS (1989–1993): epidemic situation. Wiad Parazytol 40:385–388
Cabaj W, Pozio E, Moskwa B, Malczewski A (2000) Trichinella britovi and T. spiralis in red foxes (Vulpes vulpes) in Poland. Acta Parasitol 45:340–344
Dupouy-Camet J (2000) Trichinellosis: a worldwide zoonosis. Vet Parasitol 93:191–200
Hurnikova Z, Snabel V, Pozio E, Reiterova K, Hrckova G, Halasova D, Dubinsky P (2005) First record of Trichinella pseudospiralis in the Slovak Republic found in domestic focus. Vet Parasitol 128:91–98
Järvis T, Miller I, Pozio E (2001) Epidemiological studies on animal and human trichinellosis in Estonia. Parasite 8:S86–S87
Järvis T, Miller I, Pozio E (2002) Trichinella britovi in domestic pig—a case report. Acta Vet Scand 43:131–134
Jogiste A, Baratov, O, Varjas J (2000) Helminthiases in Estonia, 1960–1999. Epinorth 1:60–61
Kapel CMO, Henriksen SA, Berg TB, Nansen P (1995) Trichinella infections in arctic foxes from Greenland: studies and reflections on predilection sites of muscle larvae. J Helminthol 69:325–330
Miller I, Järvis T, Kapel CMO (1994) Epidemiology of game trichinellosis in Estonia. In: Campbell, W C, Pozio, E, Bruschi, F (eds). Trichinellosis, Proceedings of the Eighth International Conference on Trichinellosis 599–602
Murrell KD, Pozio E (2000) Trichinellosis: the zoonosis that won’t go quietly. Int J Parasitol 30:1339–1349
Musteikaitė L (1962) Trichinellosis in Lithuania. Lietuvos TSR MA Darbai, Serija C 2:171–182
Oivanen L, Mikkonen T, Sukura A (2000) An outbreak of trichinellosis in farmed wild boar in Finland. Apmis 108:814–818
Oivanen L, Kapel CMO, Pozio E, La Rosa G, Mikkonen T, Sukura A (2002) Associations between Trichinella species and host species in Finland. J Parasitol 88:84–88
Pozio E (2000) Factors affecting the flow among domestic, synanthropic and sylvatic cycles of Trichinella. Vet Parasitol 93:241–262
Pozio E, La Rosa G, Serrano FJ, Barrat J, Rossi L, La Rosa G (1996) Environmental and human influence on the ecology of Trichinella spiralis and Trichinella britovi in Western Europe. Parasitology 113:527–533
Pozio E, Miller I, Jarvis T, Kapel CMO, La Rosa G (1998) Distribution of sylvatic species of Trichinella in Estonia according to climate zones. J Parasitol 84:193–195
Pozio E, Casulli A, Bologov VV, Marucci G, La Rosa G (2001) Hunting practices increase the prevalence of Trichinella infection in wolves from European Russia. J Parasitol 87:1498–1501
Pozio E, Christensson D, Steen M, Marucci G, La Rosa G, Brojer C, Morner T, Uhlhorn H, Agren E, Hall M. (2004) Trichinella pseudospiralis foci in Sweden. Vet Parasitol 125:335–42
Prūsaitė J (1988) Fauna of Lithuania. Mokslas Vilnius 168–218
Ranque S, Faugere B, Pozio E, La Rosa G, Tamburrini A, Pellissier JF, Brouqui P (2000) Trichinella pseudospiralis outbreak in France. Emerg Infect Dis 6:543–547
Ročkienė A (1996) Trichinellosis in Lithuania. Second Nordic–Baltic Congress on Infectious Diseases “Prevention in Focus” 38–39
Stankevičius V (1975) Trichinella in Lithuania 1969–1974. Liet TSR Mokslux Akad Darb, C Ser 4:69–74
Van der Giessen JWB, Rombout Y, Franchimont HJ, La Rosa G, Pozio E (1998) Trichinella britovi in foxes in the Netherlands. J Parasitol 84:1065–1068
Viksna AE (1970) Epizootiological and epidemiological problems of trichinellosis in Latvian SSR. Wiad Parazytol XVI(1):73
Viksna L, Keiss J, Sondore V, Rozentale B (2002) Trichinellosis in Latvia: how big is the problem? Proceedings of International Conference. “Animals. Health Food Quality” Latvia 303–306
Acknowledgments
Financial and technical support was provided by the Technical Cooperation Project No 0065(A) of the Food and Agricultural Organization of the United Nations and The Danish National Research Foundation. The authors are indebted to Dr. Jorgen Hansen from Animal Health Service, FAO, for his contributions during the early stage of the project, which laid the foundations for the successful completion of the project. Danish Centre for Experimental Parasitology is acknowledged for providing facilities to perform molecular identification of Trichinella species. The work in Lithuania was partly supported by EU Trichiporse contract QLRT-2001-2826.
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Malakauskas, A., Paulauskas, V., Järvis, T. et al. Molecular epidemiology of Trichinella spp. in three Baltic countries: Lithuania, Latvia, and Estonia. Parasitol Res 100, 687–693 (2007). https://doi.org/10.1007/s00436-006-0320-y
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DOI: https://doi.org/10.1007/s00436-006-0320-y