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Third vaccine frequently asked questions

Am I eligible for a third primary COVID-19 vaccine?

A third primary dose of vaccine is being offered to individuals aged 12 years and over who had severe immunosuppression at the time of their first or second dose of COVID-19 vaccination.

This includes those who had or have:

  • blood cancers (such as leukaemia or lymphoma)
  • lowered immunity due to treatment (such as high dose steroid medication, biological therapy, chemotherapy, radiotherapy)
  • lowered immunity due to inherited disorders of the immune system
  • an organ or bone marrow transplant
  • diseases and treatments that affect the immune system (such as poorly controlled HIV)

If you are unsure if you require a third dose of the vaccine, speak to the specialist involved in your care.


When can I have a third dose of the COVID-19 vaccine?

The third dose should be given at least eight weeks after the second dose, but timing will depend on any treatment you may be having.

Where possible, the third dose should be delayed until at least two weeks after the period of immunosuppression or if you are receiving a series of treatments at a point between treatments that your immune system is strongest.

The timing of your third dose can be discussed with your specialist.


Who shouldn’t have the third vaccination?

If you’ve had a very severe reaction to the previous dose of the vaccine, you should discuss this with your doctor.


What do I do if I haven’t had my first or second vaccine?

If you have not received a COVID-19 vaccine yet or have missed your second dose you should have them as soon as possible. You will still need the third dose but the timing of it will depend on any treatment you may be having. You can discuss this with your specialist.