Hello Southwest - the standards that you apply related to HEPA filtration should also be posted in order for all passengers to understand what's being suggested here. While you are associating HEPA filters and hospitals, you are not addressing the quality of your HEPA filter. There are HEPA filters which do little to filter out virus material. What is the MERV rating of the HEPA filters that you are referring to in your blog posting that being applied to all your planes? What is the Average Particle Size Efficiency in Microns that you are using? If they are not a high enough quality, your filters may not be doing an adequate job and allowing virus material to pass though. We look forward to your reply. Thank you.
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