Relationship between concentrations of microbiological agents in the air of agricultural settings and occurrence of work-related symptoms in exposed persons

Barbara Mackiewicz 1, Czesława Skórska 2, Jacek Dutkiewicz 2
1 - Department of Pneumonology, Oncology and Allergology, Medical University of Lublin, Lublin, Poland
2 - Department of Biological Health Hazards and Parasitology, Institute of Rural Health, Lublin, Poland
Ann Agric Environ Med
2015; 22 (3):
ICID: 1167717
Article type: Review article
 
 
For assessment of the dose-response relationship between concentrations of microbial agents in the air of various agricultural settings and occurrence of work-related symptoms in exposed workers, a meta-analysis of the results obtained in 1994–2007 on the territory of eastern Poland was performed. The studies on the airborne concentrations of total culturable microorganisms, mesophilic bacteria, Gram-negative bacteria, thermophilic actinomycetes, fungi, and bacterial endotoxins, as well as on the frequency of work-related respiratory and general symptoms in the exposed workers, were carried out at grain, thyme, valerian, flax, and hop handling on farms, in cow barns, piggeries, horse stables and in a modern hatchery. The airborne concentrations of the total microorganisms were in the range of 9.2–1236.5 × 103 CFU/m3 , of the total mesophilic bacteria 3.5–1225.8 × 103 CFU/m3 , of Gram-negative bacteria 0.0- 46.2 × 103 CFU/m3 , of thermophilic actinomycetes 0.0–7.1 × 103 CFU/m3 , of fungi 2.1–77.9 × 103 CFU/m3 , and of bacterial endotoxin 0.00925–429.55 µg/m3 . The frequency of work-related symptoms ranged between 21.7–63.8%. In a meta-analysis for assessment of the correlations between the log-transformed concentrations of airborne microbial agents and the occurrence of work-related symptoms, the multiple regression test was applied. Statistically significant correlations were found between the occurrence of work-related symptoms and the concentration of total airborne microorganisms (R=0.748555; P=0.020317), mesophilic bacteria (R=0.7573; P=0.029548), Gram-negative bacteria (R=0.835938; P=0.019129), and endotoxins (R=0.705356; P=0.03378). The correlations between the concentrations of thermophilic actinomycetes and fungi, on one side, and frequency of work-related symptoms on the other, did not attain the threshold of significance (P=0.087049 and P=0.062963, respectively). Results of the meta-analysis confirm harmful health effects of the total airborne microorganisms, total airborne mesophilic bacteria, airborne Gram-negative bacteria, and airborne bacterial endotoxin on the occupationally-exposed agricultural workers, and indicate a need for the establishment of internationally recognized occupational exposure limits for these microbial agents.
DOI: 10.5604/12321966.1167717
PMID 26403118 - click here to show this article in PubMed
  FULL TEXT STATS

Recommend this article to:

Name:
E-mail:
From:
Language:


Related articles in IndexCopernicus™
     air of agricultural settings [0 related records]
     exposed persons [0 related records]
     microbiological agents [1 related records]



 

Related articles

J Sroka, A Wójcik-Fatla,
Comparison of the efficiency of two commercial kit...
Sera of 89 pregnant women were selected according to the results of ELFA IgM, IgG and avidity IgG, and tested with commercial tests IgM, IgG and avidity IgG Western Blot (WB) to compare the efficacy of both techniques in determining the phase of T...
ABSTRACT
J Dolar-Szczasny, A Święch-Zubilewicz,
Innovation in retinal diseases – ultra-widefield...
The understanding of retinal disease has evolved rapidly with a growing number of clinical evidence supplied by ultra-widefield retinal imaging. Optos 200Tx ultra-widefield retinal imaging system uses a scanning laser ophthalmoscope, as well as an ...
ABSTRACT
J Dutkiewicz, A Wójcik-Fatla,
Ocena narażenia populacji wiejskiej Lubelszczyzny...
Wprowadzenie. Leptospiroza, wywoływana przez krętki z rodzaju Leptospira, jest uważana za najbardziej rozprzestrzenioną chorobę odzwierzęcą na świecie. Zapadalność może być zwiększona przez klęski żywiołowe takie jak powodzie i...
ABSTRACT