[Possible rickettsial etiology of Buerger's disease]

We have established a serologic study with method of direct microagglutination described by Babudieri and Zardi, by 31 patients affected from a Buerger's disease, to determine the positivity of antibody title which desposes on rickettsiosis infection. Positivities have been confirmed for the Rickettsia Burnetii from 41,9% of cases, for R. Mooseri from 6,4% and for the R. Conori only from one case. Since the positivity varies in the normal population from the 0.7% to 1.1% the data related appears very significant for a possible rickettsiosis etiology of the Buerger's disease.