Description:
<jats:p>An experiment is reported in which was studied the effects of a concomitant vaccinal infection and of vaccinal immunity upon the reaction to syphilis in rabbits induced by intracutaneous inoculation.</jats:p>
<jats:p>The results obtained showed that the reaction was modified by both conditions. A vaccinal infection initiated at the time of syphilitic inoculation was associated with a defensive reaction of lessened efficiency, the ensuing syphilis being more severe than in control animals. A state of vaccinal immunity present at the time of syphilitic inoculation was associated with a reaction of heightened efficiency, the ensuing syphilis being very mild.</jats:p>
<jats:p>These results are in harmony with those obtained in other experiments in which the intratesticular route of syphilitic inoculation was employed.</jats:p>