supported by grants from National Natural Science Foundation of China(30670098,30470087,and 30570070);the Major State Basic Research Development Program of China(“973”project 2005CB522901 and 2006CB504300);a grant from Hubei Province Science Technology Department(2006ABD007).
Salmonella (S.) typhi is an important intracellular pathogen. Among the more than 2,300 closely-related Salmonella serovars bacteria recognized, S. typhi is the only one that is pathogenic exclusively for humans, in...