Ambient endotoxin level in an area with intensive livestock production.

Anja Schulze 1, Rob van Strien 2, Vera Ehrenstein 2, Rudolf Schierl 2, Helmut Küchenhoff 2, Katja Radon 2
1 - Institute for Occupational and Environmental Medicine, Unit for Occupationaland Environmental Epidemiology and Net Teaching, Ludwig-Maximilians-University Munich, Ziemssenstr. 1;80336 Munich, Germany.
2 -
Ann Agric Environ Med
2006; 13 (1):
ICID: 468159
Article type: Original article
High levels of endotoxin are found inside and near to animal houses. However,there is a lack of data on environmental endotoxin in areas with intensive animal production facilities.We conducted a cross-sectional study of respiratory health in two villages of Lower Saxony with intensivelivestock production. We assessed the level of endotoxin exposure in the backyards of 32 participantswith two 24-hours measurements of inhalable fraction (one in winter and one in summer). The geometricmean (geometric standard deviation) of the levels of endotoxin varied between 2.0 (2.9) EU/m3 in winterand 2.9 (2.4) EU/m3 in summer. Potential predictors--season, sampling sites, and weather conditions--explained24% of the variability in ambient endotoxin concentration in the study area. The results indicate that,compared with urban residents, exposure to endotoxin is greater among people living in rural areas withintensive animal production. This might affect their respiratory health. However, these exposures arecharacterized by a large spatial variability.
PMID 16841878 - click here to show this article in PubMed

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