Animal Trichinella infection in Romania: Geographical heterogeneity for the last 8 years
Blaga, R. | Durand, B. | Stoichici, A. | Gherman, C. | Stefan, N. | Cozma, V. | Boireau, P.
Previous studies in southeastern Europe reported a high incidence of human trichinellosis and a high prevalence of Trichinella infection in animals in countries like Bulgaria, Croatia, Romania and Serbia. The aim of this study was, using routine Trichinella test data in pig and game animals, to investigate the extent of Trichinella infection in slaughtered animals in Romania, over the period of 1997-2004, and to identify possible differences in prevalence among the various regions of Romania. Trichinella infection data were obtained from trichinelloscopic examinations of domestic (backyard and industrial reared pigs) and game species (wild boar and bears). A marked difference between Transylvania and other counties of Romania, observed for human trichinellosis, was taken into account when analyzing Trichinella epidemiological data. A cumulative prevalence of 8 cases/10⁴ animals tested for pigs, 9 cases/10³ animals tested for wild boars, and 13.1 cases/10² animals tested for bears was obtained for the 8 years period. Analysis of animal prevalence data demonstrated a geographical heterogeneity: whereas Trichinella prevalence in pigs is much lower in Transylvania than in the other counties, Trichinella prevalence in game animals is similar for the different regions. This observation suggests that, in Romania, rather than the levels of the parasite circulating in domestic and game animals, it was changes in the social and political structure of Romania in the 1990s, combined with inadequate meat inspection practices that were the main contributors to these geographic variations.
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