[Comparative characterization of the microflora of the upper respiratory tract mucous membranes in bronchial asthma and allergic persistent rhinitis].

A total of 250 patients with diagnosed bronchial asthma (BA) were examined by microbiological methods. Among them--188 children and 62 adults. In 87 patients the microflora of nasal mucosa was studied, in 40--of pharynx only and in 123 patients--both the nasal and the pharynx.

[The need for revision of the bacteriological criteria of the etiological significance of diarrheogenic Escherichia strains in the diagnosis of acute intestinal infections].

Different E. coli of 0-groups, enteropathogenic (EPEC), enteroinvasive, enterotoxigenic (ETEC) and diarrheogenic in sporadic child diarrhea (DESCD), regarded as the causative agents of enteric infections, were detected in 70-80% of cases (1,146 E.coli carriers) in the feces of child and adult patients with acute enteric infections (AEI) irrespective of their age; in 35% of cases the same patient had a combination of two or more varieties of EPEC, ETEC or DESCD.

Serological variety of flagellar antigen H1 in natural Escherichia coli population.

Variation of the Escherichia coli flagellar antigen H1 was studied among 120 human isolates belonging to more than 25 O:K serovars. Factor-specific antisera were prepared and shown to be useful in the identification of serological subtypes of H1. The three subtypes found were defined as H1abc, H1acd and H1abe.

[The characteristics of the intestinal Escherichia microflora in patients with acute intestinal infections].

The content of enterobacteria in fecal samples obtained from 1,146 patients with acute enteric infections was studied. In the first days of the disease about 70% of the patients were found to have abundant and highly diversified intestinal microflora with Escherichia contamination of feces constituting 10(6)-10(7) microbial cells/g in children and 10(7)-10(8) microbial cells/g in adults. The number of patients excreting Escherichia and pathogenic enterobacteria increased from 8.