[Leptospiroses in abattoir workers in the Ostrava region].
D000003:Abattoirs; D006801:Humans; D007922:Leptospirosis / Q000453:epidemiology*; D009784:Occupational Diseases / Q000453:epidemiology*
ABATTOIRS; LEPTOSPIROSIS/epidemiology; OCCUPATIONAL DISEASES/epidemiology