Steroid shot for flu: what to know

Steroids reduce inflammation and may be used for particular medical problems, but they do not train the immune system to recognise influenza. An inactivated vaccine is designed for prevention and cannot cause flu infection because it does not contain live influenza virus. A steroid injection given for another condition should not be described as flu treatment. The symptoms of flu can overlap with other respiratory illnesses, so the need for assessment depends on your symptoms, medical history and how unwell you feel.

If you think you have flu, contact a clinician promptly when symptoms are severe, you are pregnant, you have a long-term condition, or your immune system is weakened. Rest, drink fluids and follow advice about suitable fever or pain medicines. Do not request a steroid injection as a substitute for vaccination, and do not delay care while waiting for an injection. Ask a pharmacist or clinician whether vaccination is suitable for you and which formulation is offered.

Seek emergency care for severe breathing difficulty, persistent chest pain, blue or grey lips, collapse, confusion, or inability to keep fluids down. Urgent review is also appropriate if a fever or cough improves and then becomes markedly worse, or if you are becoming unusually drowsy or weak.

Ask whether your illness could be influenza, whether you need an examination, and what the proposed steroid is intended to treat. Clarify whether an inactivated vaccine is appropriate, when it should be given, and which warning signs require urgent review.