IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-11-10-44105 Original Research Paper Challenges Faced In Implementing The Universal Immunization Program In Imphal-East District, Manipur: A Cross-Sectional Study Using Qualitative Approach Heisnam. Kulabidhu Singh Dr. Dr. Dayananda Ingudam Dr. October 2022 11 10 01 02