Are there any side effects from influenza immunisation?
Immunisation against the seasonal influenza virus usually causes no problems. You may have a temporary mild soreness at the injection site. Sometimes, it can cause a mild fever and slight muscle aches for a day or so. This soon settles and does not lead to flu or other problems. Serious reactions have been reported but are rare. For example, a severe allergic response, inflammation of nerves and inflammation of the brain are very rare reactions.
