INTRODUCTION : For successful implementation of Routine Immunization (RI) services, all its components such as
planning of immunization sessions, cold-chain and logistics management, documentation, monitoring and supervision
need to be evaluated from time to time. The objective of this study is to evaluate the process of Routine Immunization in
Primary Health Centers in Thoothukudi Health Unit District, Tamil Nadu during April 2023 to March 2024.
METHODS : A descriptive cross-sectional facility-based study was conducted in 14 out of 28 rural PHCs selected by
convenience sampling, during April 2023 to March 2024. A checklist adapted from the guidelines in Immunization
Handbook for Medical Officers 2018 manual released by Government of India was used.
RESULTS : Of the 14 PHCs, 12 (85.71%) PHCs had the list of estimated beneficiaries, and 13 (92.86%) PHCs had the
updated logistics estimation. All the PHCs had their Ice Line Refrigerators (ILR) and Deep Freezers (DFs) with functional
thermometers inside. Twice daily recording of temperature in logbook and the supervisory countersign by Medical Officer
was observed in all the PHCs. Availability of all vaccines in adequate quantity was observed in only 13 (92.86%) PHCs.
CONCLUSION : Overall, microplanning, logistics management and supervision were better. Few gaps observed in Cold
Chain Equipment (CCE) functioning like inadequate defrosting, not maintaining record of power failure and record of
defrosting signal that cold chain handlers have to be periodically be sensitised and reviewed.