Prevalence of Trichinella spiralis in Wild Animals on Two Illinois Swine Farms

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Abstract
Various wild animal species on 2 Illinois swine farms were studied for evidence of T. spiralis infection. On 1 farm only grain and commercial supplement were utilized as swine feed. Of 239 wild animals examined from this farm, only a Norway rat (Rattus norvegicus) and a white-footed mouse (Peromyscus leucopus) were found infected with T. spiralis. This is believed to be the 1st report of natural T. spiralis infection in P. leucopus. Cooked garbage was fed to swine on the 2nd farm. Of the 250 wild animals examined from this farm, only 2 Norway rats (R. norvegicus) were found infected with T. spiralis.

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