Lucy Jessop
Director of Public Health, National Immunisation Office
Babies are particularly vulnerable to respiratory syncytial virus (RSV) as they go through their first autumn and winter. Immunisation offers protection against severe RSV illness.
RSV is a common virus that causes breathing infections. Most children will get RSV at some point, but babies under six months are more likely to become seriously ill. Each winter, around one in two babies get RSV, and many need medical care. Around three in every 100 babies are hospitalised, with some requiring treatment in intensive care.
Protection that works straight away
The HSE recommend immunisation to help protect babies from severe RSV infection. It is an antibody rather than a vaccine. It gives babies antibodies directly and begins protecting them straight away. One injection provides protection for around five months, covering the autumn and winter period when RSV levels are highest. Evidence shows that this immunisation prevents more than 80% of RSV hospitalisations and reduces the risk of babies becoming seriously ill.
Babies born between 1 September 2026 and 28 February 2027
will be offered RSV immunisation before leaving the maternity hospital
RSV immunisation is free of charge
Babies born between 1 September 2026 and 28 February 2027 will be offered RSV immunisation before leaving the maternity hospital. Babies born between 1 March and 31 August 2026 can receive the immunisation through their GP.
Babies under 24 months who are at higher risk of severe RSV illness, including some babies born prematurely or with heart, lung or immune system conditions, may also be eligible. Parents should discuss this with their paediatrician or neonatologist.
Safety and side effects
Immunisation can be given at the same time as routine childhood vaccines, and there is no need to delay vaccination appointments. Most babies experience no side effects. Where side effects occur, they are usually mild and may include redness at the injection site, a temperature or mild rash.
Protect your baby against RSV this winter.
For more information, speak to your GP, paediatrician or healthcare professional, or visit hse.ie/RSV
