Public health officials fear that youngsters in South West Wales could face a new outbreak of measles because hundreds of children are still not fully immunised.
Today they began vaccinating at Cwmtawe school in Pontardawe after one confirmed case and two suspected cases were diagnosed there. A further two cases are suspected at a school at Abercrave, further up the Swansea Valley. Rob Osborne reports.
More top news
Any cloud will clear through the evening to leave a dry night with long clear spells. Remaining breezy around the coasts.
Hundreds of people have gathered in Cardiff to support the Black Lives Matter campaign after George Floyd died in police custody in the US.
There have been 82 confirmed new cases of the virus in the country.