ABSTRACT Worldwide, acute respiratory tract infections is the most common cause of illness in children under five years of age and a major cause of death. Most (70%) of these deaths occur in African and Asian countries. The current study determined association between the introduction of pneumococcal vaccine into the Expanded Programmme of Immunization (EPI) and morbidities due to acute respiratory tract infections in the Agogo Presbyterian Hospital. The study was a retrospective study involv...