quote=Graham Bullough]Out of curiosity, does anyone know if any experts have carried out any research to 1) establish what proportion of men do wash their hands after using urinals and WCs (modern technology should enable this to be done with due regard for privacy and not identifying individuals), and 2) more importantly, if infections can be transmitted to others via peanut bowls, shared work equipment, etc?
Yes, there are lots of data.
The most interesting (or starling) was collected during two Infectious Diseases conferences, on in Scandanavia and one in US. The overall result was around 85% handwashing after visiting the toilet to urinate or defaecate, slightly better for women and slightly less at the US meeting than in Scandanavia.
Interesting that the conferences were dedicated to the theme of infectious diseases. For some of us, that is a profession, though to attend a conference where researchers are lurking in the toilets making notes of our personal habits is a little shocking. Interesting also that, if my memory is correct, the US conference too place at the start of the global H1N1 epidemic that might have, but didn't raise awareness of hand hygiene requirements.
For some the data may be shocking. But remember that the average compliance rate for hand hygiene in acute hospitals is around 75-85%, with few getting anywhere near 90%.
As for Joe Public, the rates are below 30%. It varies widely, depending on circumstances. Layout of facilities. Other people present? Age and social status/education etc.
And of course, don't forget about the quality of hand washing, and drying, and then the risk of contamination of those <10% of properly cleaned hands on the door handle on the way out of the toilet.
So to worry about using someone else's tool seems a predictable bit of nonsense, unless that tool is going to be used in an entirely unconventional way!