Experimental Immunity in Syphilis and Yaws

Henry J. NicholsDepartment of Laboratories, Army Medical School

Search for other papers by Henry J. Nichols in
Current site
Google Scholar
Restricted access


  1. 1. Epidemiological data suggest that yaws protects against syphilis.
  2. 2. The recent demonstration of a true immunity in syphilis throws new light on this question.
  3. 3. Experimentally, a partial immunity against syphilis can be demonstrated in rabbits which have been infected a long time with yaws and cured by arsphenamine.
  4. 4. The subject of strains must be taken in account, both in yaws and syphilis.