Publications by authors named "Dorota Maziarka"

4 Publications

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[Occurrence of Legionella in technological water and studies of the total number of bacteria and fungi in indoor air at workplaces where water aerosol is generated].

Med Pr 2014 ;65(3):325-34

Background: The aim of the study was to confirm the fact that technological water is a significant carrier of Legionella, a potential serious threat to the health of operators of mechanical devices generating contaminated water aerosol.

Material And Methods: Microbiological analyses of water and indoor air were conducted in 8 different production facilities involved in mechanical processing of glass. The study covered 81 samples of water collected from technical water systems. Isolation of Legionella and the determination of total number of microorganisms were processed according to PN-EN ISO 11731-2:2008E and PN-EN ISO 6222:2004P, respectively. Air samples were collected using air samplers and total numbers of bacteria and fungi were determined.

Results: The studies of process water, indicated the presence of Legionella in 27.2% of collected samples. These bacteria were present in both closed and open process water reservoirs at 10 cfu/100 ml to 2.9 x 10(4) cfu/100 ml. The count of other associated bacteria exceeded 10(3) cfu/ml. All strains isolated from Legionella-positive samples were identified as L. pneumophila SG 2-14. In 5 of 8 studied production facilities an increased total number of aerial bacteria and fungi was observed in samples collected in close vicinity of aerosol source.

Conclusions: To reduce the number of microorganisms in water it is required to introduce technological water quality monitoring and procedures for the cleaning and disinfecting of mechanical devices generating water aerosol.
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October 2014

[Respiratory symptoms among industrial workers exposed to water aerosol. A pilot study of process water and air microbial quality].

Med Pr 2013 ;64(1):47-55

Zakład Higieny Srodowiska, Narodowy Instytut Zdrowia Publicznego - Paistwowy Zaklad Higieny, Warszawa, Poland.

Background: The frequency of respiratory symptoms in workers exposed to water aerosol was evaluated along with the preliminary assessment of microbiological contamination of air and water used in glass processing plants.

Material And Methods: A questionnaire survey was conducted in 131 workers from 9 glass processing plants. Questions focused on working conditions, respiratory symptoms and smoking habits. A pilot study of air and water microbiological contamination in one glass processing plant was performed. Water samples were tested for Legionella in accordance with EN ISO 11731-2:2008 and for total colony count according to PN-EN ISO 6222:2004. Air samples were tested for total numbers of molds and mildews.

Results: During the year preceding the survey acute respiratory symptoms occurred in 28.2% of participants, while chronic symptoms were reported by 29% of respondents. Increased risks of cough and acute symptoms suggestive of pneumonia were found among the respondents working at a distance up to 20 m from the source of water aerosol compared to other workers (OR = 2.7), with no difference in the frequency of other symptoms. A microbiological analysis of water samples from selected glass plant revealed the presence of L. pneumophila, exceeding 1000 cfu/100 ml. The number of bacteria and fungi detected in air samples (above 1000 cfu/m3) suggested that water aerosol at workplaces can be one of the sources of the air microbial contamination.

Conclusions: The questionnaire survey revealed an increased risk of cough and acute symptoms suggestive of pneumonia in the group working at a shortest distance form the source of water aerosol.
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June 2013

[New rules of the bathing water quality management].

Przegl Epidemiol 2012 ;66(2):357-65

Zakład Higieny Srodowiska, Narodowy Instytut Zdrowia Publicznego - Państwowy Zakład Higieny w Warszawie.

Directive 2006/7/EC concerning the management of bathing water quality and repealing directive 76/160/ EEC, adopted in 2006, resulted in changes polish laws and regulations of this topic, which were necessary to comply with the new Directive. These included Water Act and three regulations: on bathing water quality surveillance, on bathing waters register and on bathing water profile. The main changes in the sanitary surveillance on bathing waters quality and their consequences for bathers has been discussed in the article. According to new regulations conducting bathing water quality monitoring was handed over to organizers of bathing sites and local government. Bathing water supervision and water quality assessment is in Polish Sanitary Inspection competence. Unique solution of polish law is division of bathing places into two categories: bathing sites and places used for bathing. In a consequence regulations "create" another category of such objects like places used according to custom for bathing by neighbourhood people, which will be left without any supervision. There is significant threat that new formal aspects combined with organisers burdened with supervision and finance responsibilities, will lead to decrease number of bathing sites in favour of growing number of places used for bathing. This can in consequence diminish bathers health safety.
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November 2012

[Wegener's granulomatosis--disease course and treatment response of 18 patients].

Pneumonol Alergol Pol 2002 ;70(11-12):583-95

I Klinika Chorób Płuc, Warszawie.

Unlabelled: Eighteen patients (12 female) with Wegener's granulomatosis (WG) treated from 1982-2001 were studied. Mean duration of patients' symptoms prior to diagnosis was 13.5 months, and mean age 41.2. Lung biopsy confirmed WG in 5 patients, nasal biopsy was made in 12, endobronchial in 3. In 11 of 14 patients cANCAs were found. Prednisone and 2 mg/kg/day doses of oral cyclophosphamide were used to treat 17 patients, prednisone was used alone for 1. Patients with severe symptoms were given i.v. 'pulse' methylprednisolone. Mean duration of treatment was 34.8 months and of follow-up, 71.9 months. A total of 4 patients died: 3 from complete renal failure. Four patients still undergo treatment, improving markedly. Complete remission was achieved in 6 patients. A total of 3 patients relapsed and are recently treated. In another one chronic renal failure developed. Three of them had moderate symptoms at diagnosis but were treated inadequately.

In Conclusion: manifestation of WG and severity of symptoms may be different among patients. ANCA is not universally present in all patients with WG. The absence of ANCA does not exclude WG diagnosis. Complete remission can be achieved in WG patients, including the severely ill, if adequate therapy is given. Moderate symptoms at presentation do not justify less intensive treatment.
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August 2003