The second series compared
exposures of human cases withSalmonellaserotypes that were also
identified in egg samples (cases) to exposures of human cases
diagnosed withSalmonellaserotypes that were not identified in egg
samples (controls). The exposure variables assessed were consumption of chicken, consumption of eggs, contact with animals, drinking
from a private water supply, gardening and recreational water
contact, in the week before onset of illness, for both series of analyse