[swores]

There's quite a difference between a ward like they talked about and an operating theatre. There may well be valid reasons for keeping windows shut in the former too, but jumping to talk about the latter was a bit irrelevant since (except for the teams who work in their all day, who are a tiny % of the hospital population) time spent in wards is far greater, and surrounded by far more unmasked people, than time spent in theatres.

[foxhill]

sorry, i thought it was clear from my smiley & general tone that i wasn't being serious with that part of the response.