prevention des rickettsioses

;rhe di~cove!y of antibiotics having an highly effective and specific action on th~ rickettsial diseases has greatly' deprived of importance the formerly outstanding prevention of these diseases. however, the prevention of typhus: fever, the single rickettsiosis to be purely human and the nly. one to: be epidemic, remains an important problem. the methods of. prevention.m the mveterate foci 'can be determined in the light of the last attainments, which are: non-transmission of the infection by the bite of the louse, ~pread by the dusty faeces of the ectoparasite, long-lived conservation of the virus ~ that dust, possibility of lasting latency in man and of resurgences from the earner