c diff is spread by spores and is heat resistant -can't remember what temp to, very difficult to get rid of as it clings to everything including stuff that can't be cleaned readily, perfect to be spread....DON'T SIT ON HOSPITAL BEDS!!! Apparently lots of us already have it within us but it needs the normal flora and fauna in our gut to be depleted to take a hold. Antibiotics do that unfortunately. Hope he's feeling better soon :)