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Nekateri dejavniki tveganja nozokomialne legioneloze : analiza epidemije : doktorska disertacijaTerčelj-Zorman, MarjetaThe epidemic of legionellosis in the General Hospital Jesenice gave us an opportunity to study the mode of transmission of Legionella from faucet (tap) water to humans within the same room. We ... isolated L. pneumophila serogrup 1 from the hospitals old water supply system which provided water to the faucetsin the semi-intensive and the coronary units and their sanitary facilities. Thirty-one out of 71 personnel in the medical wards and 7 out of 111 patients in the medical wards fell ill. Contrary to the expectations, healthy personnel without known risk factors became more often ill with Legionella in this epidemic than bed-ridden patients in various degrees of immunosuppresion. To explain this contradiction we hypothesised that the source of infection was the contaminated aerosol, formed at the faucet, to which the personnel was exposed due to their work in vicinityč the bed-ridden patients, in the same room but at a distance of more than 3m, were not infected because the aerosol was less concentrated there, thus less contagious. The hot water system in the semi-intensive and in the coronary units was connected to the old system ĆblindĆ branch without circulation. The faucet had to be let full open for over 2 min to obtain warm enough water for patients care in the semi-intensive and coronary units. The water jet rebounded from the ceramic basin and formed aerosol. Relative air humidity 60%or higher is known to be of advantage for the survival of Legionella, whileat 30% this survival drops sharply. Hygrometer measurements showed the relative air humidity in immediate vicinity of the open faucets to reach 55% to 85% for a short period of time, after 10 min this dropped to original levels of 30-40%. The relative air humidity at 3m distance remained unchanged throughout, the aerosol did not reach that far. (Abstract truncated at 2000 characters).Type of material - dissertation ; adult, seriousPublication and manufacture - Ljubljana : [M. Terčelj-Zorman], 2001Language - slovenianCOBISS.SI-ID - 2284308
Author
Terčelj-Zorman, Marjeta
Other authors
Strle, Franc, 1949- |
Hren-Vencelj, Helena
Topics
Legionnaires' disease |
Epidemiology |
Cross infection |
Water microbiology |
Legionarska bolezen |
Epidemiologija |
Infekcija navzkrižna |
Voda, mikrobiologija |
Legionarska bolezen |
Epidemiologija |
Disertacije |
dihala |
infekcije |
pljučnica |
epidemije |
bolnišnice |
Legionella pneumophila |
dejavniki tveganja
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Library | Call number – location, accession no. ... | Copy status |
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National and University Library, Ljubljana | GS II 525631 glavno skladišče | available - reading room |
MF, Central Medical Library, Lj. | doktorske disertacije TERČELJ-Zorman M. Nekateri IN: 020010581 |
available - outside loan, loan period: 1 months |
MF, Central Medical Library, Lj. | doktorske disertacije TERČELJ-Zorman M. Nekateri IN: 020010582 |
available - outside loan, loan period: 1 months |
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Terčelj-Zorman, Marjeta | 06661 |
Strle, Franc, 1949- | 13301 |
Hren-Vencelj, Helena | 01905 |
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