Are There Side Effects from Flu Shots?
Most people tolerate flu shots well, but mild side effects are possible. The most common reactions include soreness, redness, or swelling at the injection site. Some people may also experience low-grade fever, headache, fatigue, or muscle aches, which usually resolve within a day or two without any need for treatment. These symptoms are signs that the immune system is responding to the vaccine and beginning to build protective antibodies against the flu virus.
Serious side effects are rare but can occur. These may include allergic reactions, which are more likely in people with a history of severe allergies to vaccine ingredients. However, most people - even those with egg allergies - can safely receive the flu shot under medical supervision. If you’re concerned about side effects or have experienced a reaction in the past, it’s important to discuss your medical history with a healthcare provider before getting vaccinated. Overall, the benefits of flu vaccination far outweigh the risks for the vast majority of individuals and help reduce serious illness across the population.
