To investigate decision-making factors regarding influenza vaccination several studies have applied the Health Belief Model(HBM) as a conceptual framework for health behavior The HBM was devised in the 1950s by a social psychologist according to the value–expectancy theory. It assumes that individuals assess the value of avoiding an illness People perceive risks of illnesses with serious consequences and assess It is hypothesized that people adopt certain health-related behaviors after perceiving great threat or when the benefit of health-related behavior is relatively high and perception barriers are few Thus The HBM has been used widely in health behavior research since the 1950s The HBM has been identified as an optimal framework for identifying factors that are associated with parents’ decisions to have their children vaccinated against influenza Components of the HBM have been shown to significantly affect the intentions ofparents toward influenza vaccinations [ Because increased coverage of influenza vaccination for young chil-dren will reduce the disease burden in this group