[Brill's Disease in Eastern Slovakia (author's transl)].

A report is presented on the epidemiological, clinical and serological findings obtained in 37 patients in the southern part of Eastern Slovakia who were diagnosed as having Brill's disease. All patients presented with a recurrence of classical louse-borne typhus; in no case did the disease occur for the first time. It is recommended that all patients with a febrile illness of uncertain aetiology be subjected to a routine serological examination for louse-borne typhus in epidemic areas. Careful supervision is necessary since if such late recurrences are not detected they can result in a renewed spread of the disease in an environment where lice prevail. This was demonstrated in one of the patients in this study.