Fentaw, Surafel, Amete Mihret, Rajiha Abubeker, Negga Asamene, Teklil Biza, Degefu Beyene, Elias Seyum, et al. 2017. “Characterization of Invasive Pneumococcal Isolates Recovered from Patients in Two Selected Hospitals, Ethiopia”. Ethiopian Journal of Public Health and Nutrition (EJPHN) 2 (1): 65-70. https://ejphn.ephi.gov.et/index.php/ejphn/article/view/113.