Ashshi, Ahmed, Esam Azhar, Ayman Johargy, Atif Asghar, Aiman Momenah, Abdulhafeez Turkestani, Saad Alghamdi, et al. “Demographic Distribution and Transmission Potential of Influenza A and 2009 Pandemic Influenza A H1N1 in Pilgrims”. The Journal of Infection in Developing Countries 8, no. 09 (September 12, 2014): 1169–1175. Accessed March 29, 2024. https://jidc.org/index.php/journal/article/view/25212081.