<prompt> Enteric fever is caused by -S typhiSparatyphi AS paratyphi CAll of the above  <response>: Ans. is d i.e., AH of the above Enteric fevero The term enteric fever includes typhoid fever caused by S.typhi and paratyphoid fever caused by S. paratyphi A, B and C.o The ability to resist intracellular killing and to multiply with in these cells is a measure of virulence of salmonella.o The incubation period for S. typhi ranges from 3 to 2i days.o Most prominant symptom of this systemic infection is prolonged fever. Step-ladder pyrexia.o Early physical findings are - Rash rose spot, Relative bradycardia, Hepatosplenomegaly, Epistaxis.o Complications occur in 3rd and 4th weeks - Intestinal perforation and GI hemorrhage are the two most common complications. 