Serious adverse events following receipt of trivalent inactivated influenza vaccine in Korea, 2003-2010

► Distribution of approximately 75 million doses of influenza vaccine by end of 2010 gave rise to 42 potentially serious AEFI. ► Nine Guillain-Barré syndrome, eighteen other neurologic events, eight local events, and seven miscellaneous events were included. ► The reporting rate of serious AEFI ranged from 0.006 to 0.07 cases per 100,000 distributed doses of the vaccine. ► GBS was the most common influenza vaccination-related serious AEFI.