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Discussion
I may arrange my remarks under several headings as follows: A. Things we know about yaws, B. matters about which we are uncertain, C. some suggestions.
Under A we know that:
- 1. Treponema pertenue is morphologically identical with Treponema pallidum.
- 2. That the framboesial gumma (i.e., the uncomplicated tissue reaction to T. pertenue) is like that of syphilis.
- 3. That the serum of yaws patients is immunologically identical in its reactions with that of syphilis.
- 4. That symptomatically yaws is so similar to certain types of syphilis that they are clinically undistinguishable.
- 5. That yaws is usually not a venereal disease.
- 6. That if differences exist (i.e., if there are separate viruses) that these differences cannot be worked out upon animals other than man.
- 7. That yaws is inoculable and contagious and that it is occasionally venereal in origin.
- 8. That the older investigations (such as those of Charlouis, made before bacteriology and serology were developed) prove nothing to the modern investigator except that yaws like syphilis is a contagious and inoculable disease and that it is curable by mercury and iodide of potassium.