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If you actually read the first document you linked to, it says (for the handwash): "Duration of the entire procedure: 40-60 seconds". If you watch the NHS video in your second link, you will see it is 41 seconds long (41 is a number between 40 and 60, by the way). The 20 seconds refers to the part where you rub your hands together; the video even times it and plays Happy Birthday twice!
I stand corrected. In my defence, however, if the public are constantly being told "wash hands for 20 seconds" surely many if not most take said timespan to refer to the duration of the entire procedure and won´t bother with watching NHS vijeos?
Petteri
M_V
If you actually read the first document you linked to, it says (for the handwash): "Duration of the entire procedure: 40-60 seconds". If you watch the NHS video in your second link, you will see it is 41 seconds long (41 is a number between 40 and 60, by the way). The 20 seconds refers to the part where you rub your hands together; the video even times it and plays Happy Birthday twice!