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Old 20th July 2009 | 09:46
  #3 (permalink)  
greenslopes
 
Joined: Mar 2006
Posts: 407
Likes: 1
From: brisbane
HEPA Filter
Boeing use a HEPA Filter which traps the virus particle so whilst the virus may be present from an infected passenger once it passes through the said filter as part of the recirculation process the air is clean.
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