RSV Immunisation
Learn about the HSE immunisation programme protecting infants and newborns against RSV (Respiratory Syncytial Virus).
Protecting Your Baby Against RSV
- RSV is a very common respiratory virus, especially in babies and young children
- Most babies recover well, but younger infants are more likely to become unwell and may need hospital care
- During the RSV season in Ireland, around 1 in 2 babies gets RSV, and some require hospital treatment
- Nirsevimab is a free HSE immunisation that provides antibodies directly to help protect babies against severe RSV infection
- Babies born in The NMH between 1st September 2026 and 28th February 2027 will be offered nirsevimab shortly after birth
- Nirsevimab protects against severe RSV infection for around 5 months, covering the period when RSV levels are usually highest
- The national RSV immunisation programme has significantly reduced RSV illness and hospital admissions in babies
RSV Immunisation for Newborn Babies
Respiratory syncytial virus (RSV) is a common virus that causes respiratory infections in children and adults. The risk of severe infection is highest in young babies, especially during the RSV season, which in Ireland is usually from September to February.
Why Immunisation Matters
During the RSV season, among babies in Ireland:
- Around 1 in 2 gets RSV – many need medical care from a GP or emergency department
- Before the immunisation programme was introduced, around 4 out of 100 babies were hospitalised with RSV – some needed treatment in intensive care
Nirsevimab is an antibody that helps protect your baby against severe RSV infection. It is not a vaccine. It provides protective antibodies directly rather than stimulating the immune system to make them.protect your baby. Nirsevimab is a monoclonal antibody.
The NMH programme 2026–27
The HSE is continuing its free RSV immunisation programme at The National Maternity Hospital. Babies born between 1st September 2026 and 28th February 2027 will be offered nirsevimab in the maternity hospital soon after birth, where clinically appropriate.
If your baby does not receive nirsevimab before leaving hospital, speak to your GP or maternity care team about how to arrange immunisation.
Babies born in a home birth setting during the RSV season are also eligible. Talk to your midwife or obstetrician about arranging immunisation.
Programme Results
In the 2024–25 national programme, 22,444 babies were immunised. Compared with similar babies in the previous season, the programme was associated with:
- 65% fewer RSV cases
- 76% fewer babies requiring hospitalisation for RSV
- 65% fewer babies needing intensive care due to RSV complications
Babies Born 1st March – 31st August 2026
Babies born between 1st March and 31st August 2026 are also eligible for free RSV immunisation. For the 2026–27 season, this is being provided through General Practice. Contact your GP practice to arrange an appointment. It is best for your baby to receive nirsevimab as early as possible in the RSV season. Nirsevimab can be given at the same time as routine childhood vaccines. For more information, visit HSE.ie and search for ‘RSV immunisation for babies’.
Some high-risk babies under 24 months may also be eligible for nirsevimab again. If your baby is under paediatric care and is at higher risk of severe RSV infection, speak to your paediatrician about whether immunisation is recommended.