Detection of tularemia pathogens in patients with the use of an immunofluorescence reaction

: For the first time three cases of the detection of Francisella tularensis, made by means of the direct immunofluorescence test in the fluid obtained from punctured buboes or in purulent matter taken from patients with the ulcerous bubonic form of tularemia, are presented. The simplicity of the test and its capacity of yielding rapid results make it possible to recommend this test, together with other diagnostic methods, for the clinical diagnosis of tularemia.