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Improving Lincolnshire’s health and wellbeing

Coronavirus (COVID-19) For health information and advice, read our pages on coronavirus. Learn about the government response to coronavirus on GOV.UK

People with a severely weakened immune system

If you are aged 12 or over and had a severely weakened immune system when you had your first 2 doses of the coronavirus (COVID-19) vaccine, you will be offered a 3rd dose and a booster (4th dose).

The first 2 doses may not have given you as much protection as they can for people who do not have a severely weakened immune system. A 3rd dose may help give you better protection.

A booster (4th dose) helps improve the protection you have from your first 3 doses of the vaccine. It helps give you longer-term protection against getting seriously ill from COVID-19.

You will also be offered a spring booster of the COVID-19 vaccine if you are aged 12 and over and have a weakened immune system.

Who can get a 3rd dose and a booster (4th dose)

You will be offered a 3rd dose and a booster (4th dose) if you have a severely weakened immune system. This includes if you had or have:

• a blood cancer (such as leukaemia or lymphoma)

• a weakened immune system due to a treatment (such as steroid medicine, biological therapy, chemotherapy or radiotherapy)

• an organ or bone marrow transplant

• a condition that means you have a very high risk of getting infections

• a condition or treatment your specialist advises makes you eligible for a 3rd dose and a booster (4th dose)

You’ll usually be offered a 3rd dose at least 8 weeks after you had your 2nd dose.You can get a booster (4th dose) from 3 months (91 days) after your 3rd dose.

How to get your 3rd dose and a booster (4th dose)

If you’re eligible, a GP or your hospital specialist should contact you to let you know you can get a 3rd dose or booster (4th dose).

Book online

You can book your 3rd dose or booster (4th dose) appointment online via the National Booking System or by calling 119.

Walk-in clinics – details below:

Walk-in clinics for stem cell transplant patients aged 12+ to have their booster (4th) dose (no sooner than 3 months after the their third primary dose), or to have their spring booster (5th) dose (no sooner than 3 months after their previous booster dose), or for patients who need to completely restart their course will be held at PRSA, Boston every Monday between 10am and 11am (except for 23rd and 30th May).

Spring boosters

You can use the online National Booking System or call 119 to book a spring booster if you are aged 12 years old or over with a weakened immune system.

People are advised to wait 6 months since their previous dose to get maximum protection from a spring booster.

You’ll usually be contacted by the NHS, inviting you to book when it’s due.

The appointment dates you’ll be offered start from 3 months (91 days) after your previous dose, but booking an appointment around 6 months after your previous dose is preferable.

If you have difficulties communicating or hearing, or are a British Sign Language (BSL) user, you can use textphone 18001 119 or the NHS 119 BSL interpreter service.

You’ll need to bring with you either:

• a letter from your GP or hospital specialist inviting you for an additional primary dose or booster

• a hospital letter that describes the condition or treatment that caused you to have a severely weakened immune system at the time of your 1st or 2nd dose

• a prescription or a medicine box with your name and the date showing when the medicine was prescribed – this must show that you had a severely weakened immune system at the time of your 1st or 2nd dose

If you think you’re eligible for an additional primary dose or booster but you do not have a suitable letter, prescription or medicine box, you may still be able to get your vaccination.

Positive COVID-19 test result?

People aged 18 and over need to wait 4 weeks. Most young people aged 5 to 17 years old need to wait 12 weeks. If you or your child are aged 5 to 17 years old and at high risk from COVID-19, or live with someone who has a weakened immune system, need to wait 4 weeks.

If you or your child have symptoms of COVID-19, but have not had a test, you should wait until your symptoms are better before you get the vaccine. You can talk to a healthcare professional at the vaccination site about this.