tetano
Editor, Senior Moderator
Indoor Air. 2012 Feb 7. doi: 10.1111/j.1600-0668.2012.00773.x. [Epub ahead of print]
Risk assessment for airborne infectious diseases in aircraft cabins.
Gupta JK, Lin CH, Chen Q.
Source
National Air Transportation Center of Excellence for Research in the Intermodal Transport Environment (RITE), School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907-2088, USA Environmental Control Systems, Boeing Commercial Airplanes, Everett, WA 98203, USA School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China.
Abstract
Passengers in an aircraft cabin can have different risks of infection from airborne infectious diseases such as influenza, severe acute respiratory syndrome (SARS), and tuberculosis (TB) due to the non-uniform airflow in an aircraft cabin. The current investigation presents a comprehensive approach to assessing the spatial and temporal distribution of airborne infection risk in an aircraft cabin. A case of influenza outbreak was evaluated in a 4 hour flight in a twin aisle, fully occupied aircraft cabin with the index passenger seated at the center of the cabin. The approach considered the characteristics of the exhalation of the droplets carrying infectious agents from the index passenger; the dispersion of these droplets; and the inhalation of the droplets by susceptible passengers. Deterministic and probabilistic approaches were used to quantify the risks based on the amount of inhaled influenza virus RNA particles and quanta, respectively. The probabilistic approach indicated that the number of secondary infection cases can be reduced from 3 to 0 and, for the influenza cases, 20 to 11 if N-95 respirator masks are used by the passengers. The approach and methods developed can easily be implemented in other enclosed spaces such as buildings, trains, and buses to assess the infection risk. ? 2012 John Wiley & Sons A/S.
? 2012 John Wiley & Sons A/S.
PMID:
22313168
[PubMed - as supplied by publisher]
http://www.ncbi.nlm.nih.gov/pubmed/22313168
Risk assessment for airborne infectious diseases in aircraft cabins.
Gupta JK, Lin CH, Chen Q.
Source
National Air Transportation Center of Excellence for Research in the Intermodal Transport Environment (RITE), School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907-2088, USA Environmental Control Systems, Boeing Commercial Airplanes, Everett, WA 98203, USA School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China.
Abstract
Passengers in an aircraft cabin can have different risks of infection from airborne infectious diseases such as influenza, severe acute respiratory syndrome (SARS), and tuberculosis (TB) due to the non-uniform airflow in an aircraft cabin. The current investigation presents a comprehensive approach to assessing the spatial and temporal distribution of airborne infection risk in an aircraft cabin. A case of influenza outbreak was evaluated in a 4 hour flight in a twin aisle, fully occupied aircraft cabin with the index passenger seated at the center of the cabin. The approach considered the characteristics of the exhalation of the droplets carrying infectious agents from the index passenger; the dispersion of these droplets; and the inhalation of the droplets by susceptible passengers. Deterministic and probabilistic approaches were used to quantify the risks based on the amount of inhaled influenza virus RNA particles and quanta, respectively. The probabilistic approach indicated that the number of secondary infection cases can be reduced from 3 to 0 and, for the influenza cases, 20 to 11 if N-95 respirator masks are used by the passengers. The approach and methods developed can easily be implemented in other enclosed spaces such as buildings, trains, and buses to assess the infection risk. ? 2012 John Wiley & Sons A/S.
? 2012 John Wiley & Sons A/S.
PMID:
22313168
[PubMed - as supplied by publisher]
http://www.ncbi.nlm.nih.gov/pubmed/22313168