Exposure of guinea pigs to Rickettsia rickettsii by aerosol, nasal, conjunctival, gastric, and subcutaneous routes and protection afforded by an experimental vaccine.
Guinea pigs were inoculated with Rocky Mountain spotted fever by the aerosol, conjunctival, subcutaneous, intragastric, and intranasal routes. Rickettsial infection was produced by all routes except intragastric. All animals with clinical signs of disease developed agglutinating antibody, and most developed a cell-mediated immune response. Disease produced by all experimental routes (except intragastric) was indistinguishable. The tissue culture-derived inactivated vaccine produced in this laboratory protected guinea pigs against an aerosol challenge.
D000281:Administration, Intranasal; D000336:Aerosols; D000818:Animals; D001428:Bacterial Vaccines; D003228:Conjunctiva / Q000382:microbiology; D006168:Guinea Pigs; D007441:Intubation, Gastrointestinal; D007757:Laboratory Infection / Q000635:transmission*; D012284:Rickettsia rickettsii / Q000276:immunology*; D012373:Rocky Mountain Spotted Fever / Q000517:prevention & control / Q000635:transmission*; D014611:Vaccination
D000336:Aerosols; D001428:Bacterial Vaccines