Similar exposure group (task) based analysis of bioaerosol exposures in dairies

M. E. Davidson, M. L. Clark, T. Keefe, J. Mehaffy, M. Bradford, N. Roman-Muniz, G. Dooley, J. Poole, F. M. Mitloehner, Marc Schenker, S. J. Reynolds

Research output: Chapter in Book / Conference PaperConference Paper

Abstract

Objectives: The objective of this research was to evaluate variability in bioaerosol exposures among similar exposure groups (SEGs) based on dairy workers’ tasks. This analysis is an important step in a broader effort to develop effective interventions to reduce exposures and health effects. Methods: Bioaerosol samples were collected in workers’ breathing zones (n=116) over entire work shifts (10 – 12 hours) using Button samplers (inhalable) with PVC filters to measure organic dust, endotoxin (recombinant Factor C assay), and 3-hydroxy fatty acids (3-OHFA), ergosterol and muramic acid (GC/MSMS). Ammonia was measured using direct-reading ToxiRae samplers. To our knowledge this is the first study to include combined analysis of 3- OHFA, muramic acid and ergosterol in dairy operations. Results: SEGs were defined based on work tasks including: milking (30% of population), breeding (3%), birthing/rearing (9%), medical care (12%), feeding (4%), moving stock (4%), rebedding stalls (9%), milking parlor maintenance (3%), facility maintenance/repairs (2%), other tasks [administration
Original languageEnglish
Title of host publicationHealth and Safety in Agriculture: Nordic and World-Wide Perspectives: Nordic Meeting on Agricultural Occupational Health and Safety, Ystad Saltsjöbaden, Ystad, Sweden, August 27 – 29, 2012
PublisherSwedish University of Agricultural Sciences
Pages25-26
Number of pages2
ISBN (Print)9789187117152
Publication statusPublished - 2012
EventNordic Meeting on Agricultural Occupational Health and Safety -
Duration: 1 Jan 2014 → …

Conference

ConferenceNordic Meeting on Agricultural Occupational Health and Safety
Period1/01/14 → …

Keywords

  • aerosols
  • dust
  • dairy workers

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