Protective Values of Various Types of Vi-Phage on Experimental Typhoid Infection in Mice

Abstract

Conclusion

Of the 4 serological types of Vi-phage propagated on Ty2 strain of V form B. typhosus, only the Type I Vi-phage failed to show noticeable protective action under the specified experimental conditions. The Type II, III and IV were found to be equally effective in their protective action.