Particulate matter, endotoxin, and worker respiratory health on large Californian dairies

Details

• Personal Author:
  Armitage TL ; Bennett DH ; Dooley G ; Langer CE ; Mehaffy J ; Mitchell DC ; Mitloehner FM ; Reynolds SJ ; Schenker MB ; Tancredi DJ
• Description:
  OBJECTIVE: To assess respiratory exposures and lung function in a cross-sectional study of California dairy workers. METHODS: Exposure of 205 dairy and 45 control (vegetable processing) workers to particulate matter and endotoxin was monitored. Pre- and postshift spirometry and interviews were conducted. RESULTS: Geometric mean inhalable and PM2.5 concentrations were 812 and 35.3 µg/m versus 481.9 and 19.6 µg/m, respectively, for dairy and control workers. Endotoxin concentrations were 329 EU/m or 1122 pmol/m and 13.5 EU/m or 110 pmol/m, respectively, for dairy and control workers. In a mixed-effects model, forced vital capacity decreased across a work shift by 24.5 mL (95% confidence interval, -44.7 to -4.3; P = 0.018) with log10 (total endotoxin) and by 22.0 mL (95% confidence interval, -43.2 to -0.08; P = 0.042) per hour worked. CONCLUSIONS: Modern California dairy endotoxin exposures and shift length were associated with a mild acute decrease in forced vital capacity. [Description provided by NIOSH]
• Subjects:
  Agriculture Endotoxins Lung Occupational Health Particulate Matter Respiratory Function Tests Respiratory System Safety
• Keywords:
  Agricultural Industry Animal Husbandry Workers Lung Function Particulates Respiration Spirometry
• ISSN:
  1076-2752
• Document Type:
  Text
• Funding:
  Cooperative Agreement
• Genre:
  Journal Article
• Place as Subject:
  California ; Colorado ; OSHA Region 8 ; OSHA Region 9
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  79-87
• Volume:
  57
• Issue:
  1
• NIOSHTIC Number:
  nn:20045504
• Citation:
  J Occup Environ Med 2015 Jan; 57(1):79-87
• Contact Point Address:
  Diane C. Mitchell, PhD, Department of Public Health Sciences, University of California, Davis, CA 95616
• Email:
  dcmitchell@ucdavis.edu
• Federal Fiscal Year:
  2015
• NORA Priority Area:
  Agriculture, Forestry and Fishing
• Performing Organization:
  Colorado State University - Ft. Collins
• Peer Reviewed:
  True
• Start Date:
  20030915
• Source Full Name:
  Journal of Occupational and Environmental Medicine
• End Date:
  20270914
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:19694bda5fbc35927ecbd58c964067287673dd2c176aaca95138554af942ca63a4cf236d901965d2787de58a749dbbaadd30b45180fe570eb992381c4f5a546d
• Download URL:
  https://stacks.cdc.gov/view/cdc/200902/cdc_200902_DS1.pdf
• File Type:
  [PDF - 271.08 KB ]