Do You Have Diarrhoea?

If a contaminated cook is handling ready to eat food, things that have already been cooked, or things that aren't going to be cooked at all, then you've got the potential or direct contamination. This is why really good restaurants and other food service operations will say, if you have diarrhoea, do not come to work. Sadly, in the global context, probably the more common scenario is water source contamination. Untreated sewage contaminating drinking water, probably humanity's biggest public health problem, historically at least. Think of all the famous kings of old who died of dysentery. Henry the fifth has the best food and medical care available to a fifteenth century person but no amount