These and numerous other food poisoning epidemics, in which flies were thought to have been responsible for infecting food supplies, have led many investigators to study the potentialities of house flies as carriers of pathogenic bacteria.
These and numerousother food poisoning epidemics, inwhich flies were thought to have beenresponsible for infecting food supplies,have led many investigators to studythe potentialities of house flies as carriersof pathogenic bacteria.