Characterization of Airborne Molds, Endotoxins, and Glucans in Homes in New Orleans After Hurricanes Katrina and Rita

Details

• Personal Author:
  Brown C ; Chew GL ; Dunn, Kevin H. ; Muilenberg ML ; Rao, Carol Y. ; Riggs MA ; Thorne PS ; Van Sickle D
• Description:
  In August and September 2005, Hurricanes Katrina and Rita caused breeches in the New Orleans, LA, levee system, resulting in catastrophic flooding. The city remained flooded for several weeks, leading to extraordinary mold growth in homes. To characterize the potential risks of mold exposures, we measured airborne molds and markers of molds and bacteria in New Orleans area homes. In October 2005, we collected air samples from 5 mildly water-damaged houses, 15 moderately to heavily water-damaged houses, and 11 outdoor locations. The air filters were analyzed for culturable fungi, spores, (13,16)-ß-D-glucans, and endotoxins. Culturable fungi were significantly higher in the moderately/heavily water-damaged houses (geometric mean = 67,000 CFU/m3) than in the mildly water-damaged houses (geometric mean = 3,700 CFU/m3) (P = 0.02). The predominant molds found were Aspergillus niger, Penicillium spp., Trichoderma, and Paecilomyces. The indoor and outdoor geometric means for endotoxins were 22.3 endotoxin units (EU)/m3 and 10.5 EU/m3, respectively, and for (13,16)-ß-D-glucans were 1.7 µg/m3 and 0.9 µg/m3, respectively. In the moderately/heavily water-damaged houses, the geometric means were 31.3 EU/m3 for endotoxins and 1.8 µg/m3 for (13,16)-ß-D-glucans. Molds, endotoxins, and fungal glucans were detected in the environment after Hurricanes Katrina and Rita in New Orleans at concentrations that have been associated with health effects. The species and concentrations were different from those previously reported for non-water-damaged buildings in the southeastern United States. [Description provided by NIOSH]
• Subjects:
  Endotoxins Fungi Microbiology Mycoses Occupational Health Safety
• Keywords:
  Bacteria Bacterial-cultures Microorganisms Molds Mycotoxins
• ISSN:
  0099-2240
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  Georgia ; Iowa ; Massachusetts ; New York ; Ohio ; OSHA Region 1 ; OSHA Region 2 ; OSHA Region 4 ; OSHA Region 5 ; OSHA Region 7
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  DSHEFS - Division of Surveillance, Hazard Evaluations, and Field Studies
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  73
• Issue:
  5
• NIOSHTIC Number:
  nn:20031836
• Citation:
  Appl Environ Microbiol 2007 Mar; 73(5):1630-1634
• Contact Point Address:
  Mycotic Diseases Branch, Centers for Disease Control and Prevention, 1600 Clifton Rd. NE, MS-C09, Atlanta, GA 30333
• Email:
  crao@cdc.gov
• Federal Fiscal Year:
  2007
• Peer Reviewed:
  True
• Source Full Name:
  Applied and Environmental Microbiology
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:eb447514b4057dd67f615776b50acf6d721d633bef6c1e4f6c1597bdeb80eec5f321bddcd9cff893d2853504cdb8d86b675f4b2f9c429bb31803438a1bbe80ff
• Download URL:
  https://stacks.cdc.gov/view/cdc/185977/cdc_185977_DS1.pdf
• File Type:
  [PDF - 463.46 KB ]