Infectious disease aerosol exposures with and without surge control ventilation system modifications

Francis J. Offermann, Aaron Eagan, Aidan C. Offermann, Lewis J. Radonovich

Research output: Contribution to conferencePaperpeer-review

Abstract

To help better understand the transport of airborne infectious disease organisms in hospital environments when surge control strategies are implemented, tests were conducted in a recently decommissioned hospital during a one-week period. In this paper the authors evaluate the aerosol data to determine the transport of the releases of a simulated infectious aerosol in a standard patient room into the adjacent hallway under two ventilation conditions: unmodified (normal) and modified (whole floor negative air pressure) ventilation operation mode. The average hallway protection efficiencies remained relatively high (> 98%) when the ventilation system was modified for whole floor negative pressure. During four door entry/exits the average minimum hallway protection efficiencies were lower during the modified ventilation operation (i.e. 93-94%) than those for the unmodified operation (i.e. 98-99%). We note that these lower hallway protection efficiencies may be explained by the 52% reduction in the outdoor air ventilation being supplied to the hallway during the modified operation mode.

Original languageEnglish (US)
Pages345-352
Number of pages8
StatePublished - Jan 1 2014
Event13th International Conference on Indoor Air Quality and Climate, Indoor Air 2014 - Hong Kong, Hong Kong
Duration: Jul 7 2014Jul 12 2014

Other

Other13th International Conference on Indoor Air Quality and Climate, Indoor Air 2014
CountryHong Kong
CityHong Kong
Period7/7/147/12/14

Keywords

  • Aerosol
  • Infectious disease
  • Ventilation

ASJC Scopus subject areas

  • Pollution
  • Building and Construction
  • Health, Toxicology and Mutagenesis
  • Computer Science Applications

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