preliminary studies on the prevalences of natural fasciolosis in cattle, sheep, and the host snail (galba truncatula) in north-eastern algeria.three series of investigations on natural infections with fasciola hepatica were carried out in north-eastern algeria): (1) on different samples from cattle and sheep slaughtered at constantine and jijel from 1994 to 1996, (2) from 31 cattle- and sheep-breeding farms from 1999 to 2001, using serology on blood samples, and (3) on overwintering galba truncatula from four populations, in 2002 and 2003. significantly higher prevalences of fasciolosis were found in the cattle and sheep from jijel (27 ...200414999466
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