Safety of pandemic vaccines

Vaccination campaigns currently under way to protect populations from pandemic influenza are among the largest in the history of several countries, and numbers are growing daily. Given this scale of vaccine administration, at least some rare adverse reactions, not detectable during even large clinical trials, could occur, underscoring the need for rigorous monitoring of safety. Results to date are encouraging. Included is information on: - Common side effects Guillain-Barre syndrome Investigations of deaths Safety profile of different vaccines