Flu and pneumonia vaccines: what to know

The influenza vaccine is updated to cover circulating flu strains and is generally offered seasonally. Pneumococcal vaccines target bacteria that can cause pneumonia and other serious infections; different formulations and dose schedules are used for different people. One vaccine does not replace the other.

Vaccination trains the immune system to recognise selected germs before exposure. A flu vaccine cannot cause pneumococcal disease, and a pneumococcal vaccine does not prevent influenza. Vaccination can lower the chance of severe illness, but it cannot prevent every respiratory infection or every cause of pneumonia.

A sore arm, tiredness, mild fever, or aches can occur after vaccination and usually settle without specific treatment. These effects reflect an immune response and are different from developing the infection itself.

Bring your vaccination record to a GP or vaccination service. Tell the clinician about pregnancy, immune-system conditions, long-term heart or lung disease, previous pneumococcal doses, allergies, and any serious reaction to an earlier vaccine. This information determines which product and timing are appropriate.

If you have a minor cold, vaccination may still be possible, but a clinician may advise waiting during a more significant acute illness. After the injection, move the arm gently, drink fluids, and follow the product-specific advice given to you. Do not use antibiotics to treat expected vaccine reactions.

Call emergency services for trouble breathing, swelling of the face or throat, widespread hives, collapse, or rapidly worsening symptoms after vaccination. These can indicate a severe allergic reaction and require urgent assessment.

Contact a clinician if fever is persistent, the injection site becomes increasingly red or swollen, or symptoms are getting worse rather than easing. Vaccination does not explain every later illness: cough, fever, chills, breathlessness, confusion, or coughing up phlegm may reflect an infection and should be assessed according to severity.

Ask which influenza vaccine suits you, whether you need a pneumococcal vaccine now, and whether earlier doses change the plan. Also check whether other vaccinations can be given at the same visit and what reaction-management medicines are suitable with your health conditions.