Akinbolagbe, Yeside, and Omotola Majiagbe. “Severe Infantile Pertussis in Nigeria, Report of Two Cases: The Need for Review of Current Pertussis Vaccination Schedule”. The Nigerian Health Journal 19, no. 1 (November 24, 2020): 46–51. Accessed November 23, 2024. https://tnhjph.com/index.php/tnhj/article/view/424.