Salmonella enteric server Typhi multidrug resistant to antibiotics and a study of the effect of age and sex on the incidence of typhoid fever. cbej [Internet]. 2022 Dec. 26 [cited 2024 Jul. 2];21(87):33-45. Available from: https://cbej.uomustansiriyah.edu.iq/index.php/cbej/article/view/8765