A coronavirus (COVID-19) booster vaccine dose helps improve the protection you have from your first 2 doses of the vaccine.It helps give you longer-term protection against getting seriously ill from COVID-19.Who can get a COVID-19 booster vaccineBooster vaccine doses will be available on the NHS for people most at risk from COVID-19 who have had a 2nd dose of a vaccine at least 6 months ago.This includes:people aged 50 and overpeople who live and work in care homesfrontline health and social care workerspeople aged 16 and over with a health condition that puts them at high risk of getting seriously ill from COVID-19people aged 16 and over who are a main carer for someone at high risk from COVID-19people aged 16 and over who live with someone who is more likely to get infections (such as someone who has HIV, has had a transplant or is having certain treatments for cancer, lupus or rheumatoid arthritis)People who are pregnant and in 1 of the eligible groups can also get a booster dose.Information: If you're not sure if you have a health condition that puts you at high risk, see who is at high risk from COVID-19.How and when to get your COVID-19 booster vaccineYou'll be offered a booster dose at least 6 months after you had your 2nd dose.The NHS will let you know when it's your turn to have a booster dose. It's important not to contact the NHS for one before then.Most people will be invited to book an appointment at a larger vaccination centre, pharmacy, or local NHS service such as a GP surgery.Frontline health or social care workers can book a booster dose appointment online. You do not need to wait to be contacted by the NHS.People who work for an NHS trust or a care home will usually get their booster dose through their employer.Who can book onlineYou can book your COVID-19 booster vaccine dose online if you are a frontline health or social care worker.You can also book your booster dose online if you have been contacted by the NHS and you are either:aged 50 and overaged 16 and over with a health condition that puts you at high risk from COVID-19If you are not a frontline health or social care worker, please wait to be contacted by the NHS before booking your booster dose. Book your COVID-19 booster vaccine appointment If you’re unable to get vaccinated against COVID-19 for medical reasonsSome individuals are unable to be vaccinated and also, in some cases, tested for medical reasons. You can apply for proof that you have a medical reason why you should not be vaccinated or why you should not be vaccinated and tested.If you get this proof of medical exemption you’ll be able to use the NHS COVID Pass wherever you need to prove your COVID-19 status within England.Until 24 December 2021, you can self-certify that you’re medically exempt if you work or volunteer in a care home.Some businesses in England choose to use the NHS COVID Pass as a condition of entry. Until 24 December, businesses can decide whether to allow in people who self-declare that they’re medically exempt.From 25 December, if you’re unable to get vaccinated, you’ll have to use the NHS COVID Pass in the same way that people who are fully vaccinated use it.A carer can apply on your behalf.The possible reasons for exemptions are limited. Examples that might be reasons for a medical exemption are:people receiving end of life care where vaccination is not in the person’s best interestspeople with learning disabilities or autistic individuals, or people with a combination of impairments where vaccination cannot be provided through reasonable adjustmentsa person with severe allergies to all currently available vaccinesthose who have had an adverse reaction to the first dose (for example, myocarditis)Other medical conditions could also allow you to get a medical exemption.Short-term exemptions will also be available for those with short-term medical conditions and as an option that some pregnant women may choose to take.Pregnant women can alternatively use MAT B1 certificates to show their COVID status, if they choose to use a medical exemption. Pregnant women do not need to apply for a medical exemption NHS COVID Pass if they have a MAT B1 certificate. For pregnant women the exemption will expire 16 weeks post-partum. This will allow them to become fully vaccinated after birth.The Royal College of Obstetricians, Royal College of Midwives and the UK Tetralogy Service consider COVID vaccination to be safe. They recommend that pregnant women get vaccinated against COVID.The NHS COVID Pass for people who are medically exempt from vaccinationsAll exemptions will be confirmed by your doctor, specialist clinician or midwife. If approved, your NHS COVID Pass can then be used to prove your status.The domestic NHS COVID Pass will look and work the same for people with medical exemptions as it will for people who are fully vaccinated. The pass will not show that you have a medical exemption.You will also get a confirmation letter which you should keep for your records. Use the letter to prove that you’re unable to get vaccinated if you work or volunteer in a care home or are travelling from a country that’s not on the red list. The letter will explain that you’re medically unable to get vaccinated, the pass does not.It’s up to other countries to decide whether or not residents in England with a medical exemption qualify for relaxed border measures.