Although Bonjour1 only thirteen years ago characterized the "theory of the contagiousness of warts" (and condylomata acuminata) as an error, their infectious character must be considered as proved. Observations reported in the literature support this conclusion.
The appearance of warts in pruritic dermatoses, their occurrence in linear scratch marks, their simultaneous presence in members of the same household and their occurrence in physicians following injuries contracted in connection with their removal had long suggested the inoculability of warts. This was definitely proved by Jadassohn's experiments which he demonstrated and discussed at a meeting of the German natural scientists and physicians (Vienna, 1894) and, more extensively, at a congress of the German Dermatologic Society (Graz, 1895).2 Corresponding reports referring to 1 case each were published by Variot3 in 1894 and De Fine Licht4 in 1895.
As early as 1895 Jadassohn,2 conscious of
BIBERSTEIN H. IMMUNIZATION THERAPY OF WARTS. Arch Derm Syphilol. 1944;50(1):12–22. doi:10.1001/archderm.1944.01510130015005
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