It sometimes damages trees and causes earthquakes :0

It can be transmitted from animals or animal products to humans or from person to person.

Typhoid fever, also known as enteric fever, is a potentially fatal multisystemic illness caused primarily by Salmonella enterica, subspecies enterica serovar typhiand, to a lesser extent, related serovars paratyphi A, B, and C.

Well, yes. But ulcers are not the only cause of diarrhoea.

Ulcers in the small and large intestine do cause diarrhoeas.

Examples are- diarrhoea caused in typhoid ulcers caused by Salmonella Typhi and paratyphi A & B, Ulcerative colitis etc.

sometimes called Salmonella paratyphi infection, is a serious contagious disease caused by a gram-negative bacterium. It is also grouped together with typhoid fever under the name enteric fever.