[Occurrence of Vibrionaceae in crude and mechanically purified urban sewage; evaluation of their sensitivity to selected drugs]. / Wystepowanie bakterii z rodziny Vibrionaceae w surowych i mechanicznie oczyszczonych miejskich sciekach; ocena ich wrazliwosci na wybrane chemioterapeutyki.

The aim of this study was to ascertain whether bacteria from Vibrionaceae family are present in crude and mechanically cleaned urban sewage and what is their profile of resistance to selected chemotherapeutics. The presence in sewage of bacteria of Vibrionaceae family was proved. They constitute only small percentage of total number of bacteria. No influence of mechanical purification process of sewage on the reduction of total number of bacteria and bacteria from Vibrionaceae family was seen. The number of bacteria from Vibrionaceae family amounted to 6-9 cells per 100 ml of crude sewage and 2-16 cells per 100 ml of mechanically cleaned sewage. From samples tested the following species were isolated: non 01 V. cholerae, V. fluvialis, V. parahaemolyticus, A. hydrophila, A. caviae, A. sobria. All strains were sensitive to neomycin and nalidixic acid and with few exceptions of A. caviae strains to streptomycin, gentamicin, doxycycline and chloramphenicol .

[Presence of potentially pathogenic bacteria and fungi in the cooling-lubricating emulsion used in the aluminum sheet rolling process]. / Obecnosc potencjalnie chorobotwórczych bakterii i grzybów w emulsji chlodzaco-smarujacej stosowanej w procesie walcowania blachy aluminiowej.

Microbiological tests of aluminium rolling water-oil emulsion reveal high level of contamination: relatively anaerobic bacteria 10(6)-10(8) cells/ml, fungi and yeasts 10(3)-10(4) cells/ml, and also anaerobic bacteria Desulfovibrie sp. reducing sulfates to hydrogen sulfide. In emulsion samples there were present bacterial strains potentially dangerous to health, belonging to the family Enterobacteriaceae, Vibrionaceae, Pseudomonadaceae, Bacillaceae. The fungi and yeasts found in the emulsion were identified as: Aspergillus sp., Penicillium sp., Cladosporium sp., Cephalosporium sp., Candida sp. The emulsion sprayed in aerosol in air of the mill was the infecting source for the workers. The emulsion was protected by a biocid and thus the growth of potentially pathogenic microorganisms was inhibited.