[The epidemiology of rotavirus gastroenteritis].

The materials, comprehensively characterizing the water outbreaks of gastroenteritis with its etiology established and its clinico-epidemiological interpretation made, are presented. Along with other data, the water nature of the outbreak was verified by the detection of rotavirus antigen, made in the enzyme immunoassay, not only in patients, but also in water samples from the surface water source and from sewage. To isolate the infective agent from environmental objects, bentonite, a mineral sorbent, has been used for the first time.

[Comparative diagnostic value of methods for detecting dysentery antigens in substrates of the patient's body].

The comparative evaluation of different immunological methods, such as the enzyme immunoassay, the aggregate hemagglutination test and the complement fixation test, used for the detection of specific Shigella antigens in biological body substrates obtained from 287 patients with acute dysentery caused by S. sonnei, S. flexneri and S.

[Diagnostic importance of various methods of determining infectious O-antigenemia in patients with typhoid and paratyphoid fevers A and B].

Altogether 181 patients with typhoid and paratyphoid fever (54 with typhoid fever, 50 with paratyphoid fever type A, and 77 with paratyphoid fever type B) were investigated. Of them 108 (59.7%) patients were examined during the 1st week of disease.

[Quantitative determination of the soluble O antigen of Salmonella serogroup B and of specific antibodies in different classes by using immunoenzyme analysis].

The results of measurements of S. typhimurium O-antigen and specific IgA-, IgG- and IgM-antibodies in 115 serum samples from patients with salmonellosis induced by group B salmonellae are analyzed. As determined in this study, the concentrations of IgA-antibodies ranged 0-15 micrograms/ml, the minimal diagnostically significant value being 3.

[Effect of levamisole immunocorrective therapy on the dynamics of infectious O-antigenemia and the clinical manifestations in dysentery patients].

The immunocorrecting agent levamisole decreases the duration of infectious O-antigenemia, determined in the O-aggregate hemagglutination test and in the enzyme immunoassay, essentially accelerates the progress of convalescence and considerably decreases the possibility of the prolonged relapsing course of the disease in comparison with common methods of treatment.