“…; Iushchenko et al, 1982;Pavlov, 1985;Ding et al, 1986;Schiemann, 1987;De Centorbi et al, 1989;Hamama et al, 1992;Durisin et al, 1997) A wide range of animals: domestic (cat and dog), stock farm (chinchilla, mink, pig, rabbit, cow, goose, horse, sheep, and buffalo), zoo (monkey), wild (raccoon, fox, snail, frog, beaver, deer, ocelot, crab, flies, and fleas), birds (robin), shellfish (oyster), and many species of small rodents (McClure et al, 1971;Wauters et al, 1971;Alonso and Bercovier, 1975;Toma and Deidrick, 1975;Wauters and Janssens, 1976;Kapperud, 1977;Servan et al, 1979;Iushchenko et al, 1982;Gurleva et al, 1985;Kato et al, 1985;Walker and Grimes, 1985;Shayegani et al, 1986;Weber et al, 1987;Cox et al, 1990;Escudero et al, 1991;Weynants et al, 1996;Zheng and Xie, 1996;Funk et al, 1998;Letellier et al, 1999;Naktin and Beavis, 1999) Most of the strains isolated from the environment belong to the nonpathogenic biotype 1A, with the exception of pathogenic strains of biotype 1B, which are frequently isolated from water.…”