Thanks for that - I watched the whole thing, and found it useful. I wasn't talking about depriving health workers of 'proper' masks, more that I've heard argum

Thanks for that - I watched the whole thing, and found it useful. I wasn't talking about depriving health workers of 'proper' masks, more that I've heard argument that simple cotton masks could work to stop the spread of the disease - particularly as people may not know they are contagious before developing symptoms, and it would be a fairly low-cost step to take. I get that it takes discipline to ensure that a proper mask works well as part of a number of pieces of PPE to stop the wearer getting infected, but I was thinking as much of it protecting others as the wearer.