[The serological characteristics of the O antigens of Pseudomonas aeruginosa isolated from patients with a Pseudomonas infection during immunotherapy].

Serologic characteristics of P. aeruginosa O-antigens isolated from patients with P. aeruginosa infection were studied over the course of treatment with anti-P. aeruginosa sheep immunoglobulin. The preparation was used in 54 patients with nongeneralized forms of P. aeruginosa infection (infected wounds, pleural empyema) externally or intraperitoneally. From the clinical material collected from the patients a total of 54 P. aeruginosa strains were isolated. Serologic typing of the isolated strains with factor or group diagnostic agglutinating sera has revealed the O-group composition of the isolated strains; 66% of them were classified with O-groups 2,3, and 6. Serologic variants of the strains isolated from patients proved to be stable over the course of the disease immunotherapy. Analysis of the results of bacteriologic control of immunotherapy. efficacy and the clinical data has demonstrated the efficacy of immunotherapy in 61.1% of cases and its partial effect in 20.4% of cases of P. aeruginosa infection.