Airborne fungal spore monitoring in a protective environment during hospital construction and correlation with an outbreak of invasive aspergillosis

Peter Charles Iwen, J. Calvin Davis, Elizabeth Cecile Reed, Barbara A. Winfield, Steven Heye Hinrichs

Research output: Contribution to journalArticle

95 Citations (Scopus)

Abstract

OBJECTIVES: Evaluate aerobiological monitoring for fungal spores during hospital construction and correlate results with an outbreak of invasive aspergillosis (IA).DESIGN: Prospective air sampling for molds was done using the gravity air-settling plate (GASP) method. SETTING: A university medical center special care unit consisting of single-patient rooms with high-efficiency particulate air filtration under positive pressure. PATIENTS: Five neutropenic patients who subsequently developed IA. RESULTS: Four of the five patients with IA were housed in rooms adjacent to a construction staging area. Aerobiological monitoring detected an increase in the number of airborne fungal spores including Aspergillus species in these rooms; however, increased counts preceded IA diagnosis by 1 to 7 days in only three of the five patients. Swab cultures of the exhaust vents within each room confirmed results from air-settling plates. Follow-up monitoring, using the GASP method, demonstrated that control procedures were effective in reducing air mold contamination. CONCLUSION: The GASP method, although able to demonstrate that infection control measures reduced mold contamination of the air, was insensitive to detect levels of mold contaminates in time to prevent IA (Infect Control Hosp Epidemiol 1994; 15:303-306).

Original languageEnglish (US)
Pages (from-to)303-306
Number of pages4
JournalInfection Control & Hospital Epidemiology
Volume15
Issue number5
DOIs
StatePublished - May 1 1994

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Hospital Design and Construction
Aspergillosis
Fungal Spores
Disease Outbreaks
Air
Gravitation
Fungi
Patients' Rooms
Aspergillus
Infection Control
Pressure

ASJC Scopus subject areas

  • Microbiology (medical)
  • Infectious Diseases
  • Epidemiology
  • Immunology

Cite this

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title = "Airborne fungal spore monitoring in a protective environment during hospital construction and correlation with an outbreak of invasive aspergillosis",
abstract = "OBJECTIVES: Evaluate aerobiological monitoring for fungal spores during hospital construction and correlate results with an outbreak of invasive aspergillosis (IA).DESIGN: Prospective air sampling for molds was done using the gravity air-settling plate (GASP) method. SETTING: A university medical center special care unit consisting of single-patient rooms with high-efficiency particulate air filtration under positive pressure. PATIENTS: Five neutropenic patients who subsequently developed IA. RESULTS: Four of the five patients with IA were housed in rooms adjacent to a construction staging area. Aerobiological monitoring detected an increase in the number of airborne fungal spores including Aspergillus species in these rooms; however, increased counts preceded IA diagnosis by 1 to 7 days in only three of the five patients. Swab cultures of the exhaust vents within each room confirmed results from air-settling plates. Follow-up monitoring, using the GASP method, demonstrated that control procedures were effective in reducing air mold contamination. CONCLUSION: The GASP method, although able to demonstrate that infection control measures reduced mold contamination of the air, was insensitive to detect levels of mold contaminates in time to prevent IA (Infect Control Hosp Epidemiol 1994; 15:303-306).",
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AU - Reed, Elizabeth Cecile

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AU - Hinrichs, Steven Heye

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N2 - OBJECTIVES: Evaluate aerobiological monitoring for fungal spores during hospital construction and correlate results with an outbreak of invasive aspergillosis (IA).DESIGN: Prospective air sampling for molds was done using the gravity air-settling plate (GASP) method. SETTING: A university medical center special care unit consisting of single-patient rooms with high-efficiency particulate air filtration under positive pressure. PATIENTS: Five neutropenic patients who subsequently developed IA. RESULTS: Four of the five patients with IA were housed in rooms adjacent to a construction staging area. Aerobiological monitoring detected an increase in the number of airborne fungal spores including Aspergillus species in these rooms; however, increased counts preceded IA diagnosis by 1 to 7 days in only three of the five patients. Swab cultures of the exhaust vents within each room confirmed results from air-settling plates. Follow-up monitoring, using the GASP method, demonstrated that control procedures were effective in reducing air mold contamination. CONCLUSION: The GASP method, although able to demonstrate that infection control measures reduced mold contamination of the air, was insensitive to detect levels of mold contaminates in time to prevent IA (Infect Control Hosp Epidemiol 1994; 15:303-306).

AB - OBJECTIVES: Evaluate aerobiological monitoring for fungal spores during hospital construction and correlate results with an outbreak of invasive aspergillosis (IA).DESIGN: Prospective air sampling for molds was done using the gravity air-settling plate (GASP) method. SETTING: A university medical center special care unit consisting of single-patient rooms with high-efficiency particulate air filtration under positive pressure. PATIENTS: Five neutropenic patients who subsequently developed IA. RESULTS: Four of the five patients with IA were housed in rooms adjacent to a construction staging area. Aerobiological monitoring detected an increase in the number of airborne fungal spores including Aspergillus species in these rooms; however, increased counts preceded IA diagnosis by 1 to 7 days in only three of the five patients. Swab cultures of the exhaust vents within each room confirmed results from air-settling plates. Follow-up monitoring, using the GASP method, demonstrated that control procedures were effective in reducing air mold contamination. CONCLUSION: The GASP method, although able to demonstrate that infection control measures reduced mold contamination of the air, was insensitive to detect levels of mold contaminates in time to prevent IA (Infect Control Hosp Epidemiol 1994; 15:303-306).

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