[Biological properties of opportunistic enterobacteria isolated from the blood of patients]. / Biologicheskie svoistva uslovno-patogennykh énterobakterii, vydelennykh iz krovi bol'nykh.

The comparative study of the signs of pathogenicity in enterobacteria (119 strains) isolated from the blood of 145 patients with the clinical symptoms of sepsis and from the feces of healthy persons (560 strains from 220 persons) has demonstrated that the same species of opportunistic microorganisms may essentially differ in the formation of DNase, RNase, as well as in their capacity for the positive reaction with Congo red. The possibility of using the above-mentioned signs of pathogenicity for diagnostic purposes as additional signs for the differentiation of virulent cultures of opportunistic enterobacteria from avirulent ones is suggested.

[Role of Klebsiella pneumoniae in the etiology of bacterial sepsis]. / Rol' Klebsiella pneumoniae v étiologii bakterial'nogo sepsisa.

206 K. pneumoniae cultures isolated from 72 patients with the positive results of the hemoculture (obtained with specimens taken both from living patients and from autopsy material) were studied; of these cultures, 104 were isolated from the blood and 72 from specimens taken from different organs. Among enterobacteria isolated from the blood, Klebsiella organisms constituted 33% (taking the second place after E. coli in occurrence). K. pneumoniae isolated from the blood were classified mainly with serovars K16, K18, K2, K33, K13, K24. The data on the etiological role of these microorganisms in sepsis occurring either as acute primary infection or as septic complication in various diseases were obtained.