Acceptability of seasonal influenza vaccines among health care workers in Vietnam in 2017

•Younger healthcare workers (HCWs) under 30 and 30–39 years old were less likely to get vaccinated against seasonal influenza than HCWs ≥50 years old.•Nurses were more likely to get seasonal influenza vaccination than physicians.•The most common reason for accepting vaccination was fear of getting influenza.•The most common reason for refusing vaccination was concern about vaccine side effects. A demonstration project in Vietnam provided 11,000 doses of human seasonal influenza vaccine free of charge to healthcare workers (HCWs) in 4 provinces of Vietnam. Through this project, we conducted an acceptability survey to identify the main reasons that individuals chose to be vaccinated or not to inform and improve future immunization activities. We conducted a descriptive cross-sectional survey from May to August 2017 among HCWs at 13 selected health facilities. We employed logistic regression to determine the association between demographic and professional factors, and the decision to receive seasonal influenza vaccine. We performed post-hoc pairwise comparisons among reasons for and against vaccination using Chi square and Fisher’s exact tests (for cell sizes