>What I was looking for here was a discussion of historical problems with
>sanitation and disease, such as London went through until they cleaned
>up the Thames.  Or how dysentery spreads in a sieged city.  

[In a blatent attempt to take this thread off in another direction...]

Why yes, I believe dead cattle were often thrown by catapults into besieged castles in the hopes of spreading disease, no?

Lord Manfred Wolf
Barony of the StarGate
 
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