Kanungo, Suman, Shanta Dutta, and Dipika Sur. “Epidemiology of Typhoid and Paratyphoid Fever in India”. The Journal of Infection in Developing Countries 2, no. 06 (December 1, 2008): 454–460. Accessed April 23, 2024. https://jidc.org/index.php/journal/article/view/19745523.