RSV (respiratory syncytial virus) is a common cause of respiratory tract infections. For most adults and children, RSV infection causes a mild illness, such as a cough or cold, which usually gets better on its own. However, for some, especially babies under one year of age and older adults, RSV can be very serious and can cause bronchiolitis and pneumonia. At least half of all children have RSV in the first year of life and almost all will have had it by the time they are two.
You can help protect your baby against RSV from birth by having the RSV vaccination while you are pregnant.
Rydym yn croesawu gohebiaeth a galwadau ffôn yn y Gymraeg neu'r Saesneg. Atebir gohebiaeth Gymraeg yn y Gymraeg, ac ni fydd hyn yn arwain at oedi. Mae’r dudalen hon ar gael yn Gymraeg drwy bwyso’r botwm ar y dde ar frig y dudalen.
We welcome correspondence and telephone calls in Welsh or English. Welsh language correspondence will be replied to in Welsh, and this will not lead to a delay. This page is available in Welsh by clicking ‘Cymraeg’ at the top right of this page.