Look, I hate to be controversial, 'specially as one day I may buy you a pint, but....
The report found that air particle filtration systems fitted on modern aircraft should remove the possibility of the transmission of infection that would otherwise exist in aircraft cabins using recirculatory ventilation systems.
isn't exactly a robust outcome measure is it?
Grade 1 or 2 evidence on this forum only please
Proper trials, multicentred, randomised, large numbers, not the opinion of an "expert." .....h'mmm, I can feel a bit of work coming on for the New Year.
Sponsors please?