The document summarizes the immunization activities and adverse events following immunization (AEFI) surveillance system in Andhra Pradesh, India. It provides details on the infrastructure for immunization delivery, beneficiary groups, immunization schedules, AEFI reporting channels, investigation process, current reporting status and barriers to reporting. The state has established an AEFI surveillance system with trained personnel, standard guidelines and formats for reporting, investigating and reviewing AEFI cases at the district and state level. However, further efforts are still needed to educate all healthcare workers thoroughly on AEFI reporting.