The application of the National Immunization Information System at primary health facilities is crucial in improving the quality of medical examinations as well as collecting and reporting immunization information. This study aimed to describe the infrastructure for the Expanded Program on Immunization's software at communes/wards/towns health centers (CHCs) of a province in central Vietnam and to evaluate the capacity of using immunization software of health officers. Another objective was to identify factors associated with skills in using the software of participants. A cross-sectional study combined with qualitative and quantitative methods was conducted, including 237 health officers from 50% (76/152) CHCs of Thua Thien Hue Province. Data were collected through face-to-face interviews using a developed questionnaire and observation via checklists. The results showed that most CHCs had sufficient infrastructure for the Expanded Program on Immunization (EPI). Health officers proficient in using the National Immunization Information System accounted for 74.7%. The CHCs should be equipped with more devices serving the immunization information management system and regularly maintain the equipment and the internet connection. Training health officers at CHCs in the data management of the vaccination system and record tracking ability using the National Immunization Information System is needed.
Keywords: Vietnam; community/ward health centers; developing country; extended vaccination program; software.