Is flu vaccination done with inactivated vaccine?

An inactivated vaccine contains influenza material that has been treated so it cannot multiply and cause influenza infection. It presents selected targets to the immune system, which then prepares a response. Protection develops after vaccination rather than immediately. Flu vaccine products can differ by age group, formulation and delivery method, so the label and local programme determine which option is offered.

Tell the clinician about previous serious allergic reactions to a vaccine or vaccine ingredient, a past reaction after flu vaccination, current illness, pregnancy, and medicines or conditions that affect immunity. Ask which product is planned and whether another dose or a different route is appropriate. After an injection, remain where staff can help if you feel unwell. A sore arm or short-lived fever can occur.

Get urgent help for breathing difficulty, swelling of the face or throat, widespread hives, fainting that does not quickly settle, or sudden severe weakness after vaccination. Contact a clinician for a persistent high fever, worsening illness, or symptoms that concern you. Flu vaccination cannot cause influenza infection from a replicating virus, but it also does not prevent every respiratory infection.

Ask whether the planned product is inactivated, which route will be used, whether your medical history changes the recommendation, and what symptoms after vaccination should prompt a call.