The influenza vaccination have important rule in prevention and it’s apply mandatory for the people go to hajj, health care workers and medical compromised patient by the rule and regulation of ministry of health. For this reason we do this research to follow the people take the vaccination for know what side effect they observed through survey. Materials and methods An epidemiological survey to check the side effect rates with influenza vaccination and possible associated reasons for that.

Keywords : Influenza, Vaccination Health-care employees Hospital Risk factors Saudi Arabia hajj.