| epidemiological investigation of risk factors for campylobacter colonization in norwegian broiler flocks. | an epidemiological investigation was conducted to identify risk factors related to hygiene and husbandry practices which determine the introduction of campylobacter spp. into broiler chicken flocks. all 176 broiler farms in an area in southeastern norway participated in the study. each farm was represented by one flock selected at random during a one-year period. the flocks were examined for campylobacter colonization at slaughter, and the flock managers were subsequently interviewed about hygie ... | 1993 | 8405152 |