I: | Salmonella typhi is a pathogenic bacterium which causes typhoid fever in human beings. |
II: | These pathogens generally enter the small intestine through food and water contaminated with them |
III: | The pathogen remains confined to the small intestine. |
IV: | Intestinal perforation and death may occur in severe cases. |
V: | Typhoid fever could be confirmed by Widal test. |