Flu Vaccine Side Effects: What to Expect and When to Call

Flu vaccine side effects are usually short-lived reactions at the injection site or a mild flu-like feeling. This video covers common effects, how long they tend to last, and signs that need medical care. It is separate from the shingles-vaccine video. Flu shots change by season and country, so this is an overview of typical reactions, not a reason to take or skip a dose. A clinician should advise on allergies, illness on the day, and which product is offered locally. Topics covered: Common flu vaccine side effects Sore arm, fever, and tiredness How long reactions usually last When to seek medical attention How this differs from having the flu This video is general education, not medical advice.