adverse events of trivalent influenza vaccine among health care workers in iran

background: to assess the frequency and type of adverse events after influenza vaccination in iranian adults. methods: health care workers in 7 medical centers received the influenza vaccine from october 2006 to february 2007 and fol­lowed by phone regarding symptoms experienced after vaccination. results: of 897 adults who participated in the study, local and systemic reactions were reported by 187 (20.8%) and 198 (22.1%) persons, respectively. the most common local reaction was pain (20.2%), while myalgia (15.8%) was the most com­mon systemic reaction. one case of guillain-barre syndrome was reported. conclusion: inactivated influenza vaccine administration did not result in potential adverse events in healthy adults.