Getting the flu vaccine

The flu vaccine is a safe and effective vaccine. It helps to protect you from flu. The best time to get the flu vaccine is before the flu season starts. It's available from October to April each year.

Where to get the flu vaccine

You can get a flu vaccine from your GP surgery or pharmacist.

Who can get a free flu vaccine

You can get a free flu vaccine if you are:

People aged 50 to 64 have been added to the free flu vaccine programme until the end of April 2022.

People with these conditions can also get a free flu vaccine:

  • chronic heart disease, including acute coronary syndrome
  • chronic liver disease
  • chronic kidney failure
  • chronic respiratory disease, including chronic obstructive pulmonary disease (COPD), cystic fibrosis, moderate or severe asthma, or bronchopulmonary dysplasia
  • chronic neurological disease including multiple sclerosis, hereditary and degenerative disorders of the central nervous system
  • diabetes
  • Down syndrome
  • haemoglobinopathies
  • morbid obesity, which means a body mass index (BMI) over 40
  • immunosuppression due to disease or treatment (including asplenia or hyposplenism, and all cancer patients)
  • children with a moderate to severe neurodevelopmental disorder such as cerebral palsy
  • children on long-term aspirin therapy
  • those with any condition that can compromise respiratory function, like spinal cord injury, seizure disorder or other neuromuscular disorder, especially those attending special schools or day centres

If you are a carer or a household contact of a person with one of these conditions, you can also get a free flu vaccine.


Free flu vaccines will be offered to carers or household contacts of people who have:

  • have an underlying chronic health condition as listed above
  • Down syndrome

A carer is someone who provides an ongoing, significant level of care to someone who is in need of care in the home due to illness, disability or frailty.

Free flu vaccines will not be offered to household contacts of:

  • people aged 50 years and older, who do not also have a chronic health condition
  • pregnant women
  • children aged 2 to 17 years
  • healthcare workers
  • carers

If you cannot get a free flu vaccine

If you cannot get a free flu vaccine, you can still get it at a pharmacy or GP. But you will need to pay for it.

Children and young people aged between 2 and 17 years can get the nasal flu vaccine for free.

Read about getting the flu vaccine for children

How it's given

For adults, the flu vaccine is given in your arm.

Children get the Fluenz Tetra vaccine through their nose as a nasal spray.

When it starts to work

It takes 2 weeks for the vaccine to work. It should protect you for the whole flu season.

Side effects

After the vaccine, you may have some mild side effects.

These may include:

If you feel any of these side effects, rest and paracetamol can help.

Serious side effects

Serious side effects such as a severe allergic reaction are rare.

In very rare cases Guillain-Barré syndrome (GBS) has been reported. GBS is a condition that affects the nerves in the body. It causes nerve inflammation and can cause pain, numbness, muscle weakness and difficulty walking. But you are far more likely to get Guillain-Barré syndrome from having the flu than from the flu vaccine.

Report any harmful effects to the Health Products Regulatory Authority (HPRA)


All HSE immunisation programmes follow the recommendations of the National Immunisation Advisory Committee (NIAC).

Page last reviewed: 8 November 2021
Next review due: 8 November 2024