In extending our studies to include
an organism of the food poisoning type,
it has been demonstrated that Salmonella
enteritidis may be transmitted
with ease and rapidity through several
populations of flies, and that all surfaces
with which the infected fly comes
in contact become potential sources of
reinfection for other insects. Our
studies show that not only does the
fly carry the organism on its outside
surfaces, but also in its digestive tract,
since the infected, macerated insect
contains large numbers of the test organism
while the organism cannot be
isolated from the chemically treated,
washed fly.