stool analysis a prevalence of
Fasciola in cattle from 23% to 69% was determined, depending on
the region under study (25).

     In Colombia a prevalence of 40% determined by analysis of
bovine feces was reported; the infected cows were less fertile
and a higher proportion aborted than among their uninfested
counterparts (26).

     3.   Economic losses and effects of this disease on public
health.

     Human infection with F. hepática was observed in numerous
countries.  Unfortunately, it is