$Pasteurella/Yersinia pestis$ (causal agent of Bubonic Plague) is transmitted by:

Statement $P$: $Salmonella$ $typhi$ are rod-shaped.
Statement $Q$: The incubation period of the bacteria is $1-3$ weeks.

'Black death' is related to:

Which bacteria is responsible for typhoid?

Which of the following is a bacterial disease?

Given below are two statements $:$
Statement-$I$ : Typhoid fever can be confirmed by the Widal test.
Statement-$II$ : Intestinal perforation and death may occur in severe cases of typhoid.
In the light of the above statements,choose the correct answer from the options given below $:$