其他摘要：Background: The surveillance of adverse events following immunization (AEFI) is essential to improve high standard of vaccine safety, and maintain public trust in immunization programs. This study aimed to determine the AEFI and their related factors in children. Materials and Methods: This cross-sectional study including all children under 7- year of age, in Hamadan Province, the West of Iran, in 2014. All of the AEFI related with Bacille Calmette-Guérin (BCG), Diphtheria, Pertussis, and Tetanus (DPT), Measles, Mumps, and Rubella (MMR) vaccines were obtained from the documented record-based by Health Centers, in Hamadan province. Results: From a total of 239,204 doses administered, 284 AEFI were notified (11.8 per 10,000 doses). The proportion of AEFI was more frequently reported from Health Houses than Health Centers (60.2 vs. 37.0, P
