AlHajem HM, Almazini MA, Khudaier BY. Investigation of the presence of some virulence factors of the Streptococcus pneumoniae isolates among patients in Basra Governora. Iraqi Journal of Science. 2018;59(3A):1205-1215. Accessed January 7, 2026. https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/450