Transmission fecal-oral route close contact with patients or carriers contaminated water and food flies and cockroaches
Transmission fecal-oral route close contact with patients or carriers contaminated water and food flies and cockroaches
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Susceptibility and immunity all people equally susceptible to infection acquired immunity can keep longer, reinfection are rare immunity is not associated with antibody level of“H","o"and“V. No cross immunity between typhoid and paratyphoid
Susceptibility and immunity ◼ all people equally susceptible to infection ◼ acquired immunity can keep longer, reinfection are rare ◼ immunity is not associated with antibody level of “H”, “O”and “VI”. ◼ No cross immunity between typhoid and paratyphoid
Susceptibility and immunity All seasons,usually in summer and autumn. Most cases in school-age children and young adults. both sexes equally susceptible
Susceptibility and immunity ◼ All seasons, usually in summer and autumn. ◼ Most cases in school-age children and young adults. ◼ both sexes equally susceptible