Expert: 'Tens of thousands of children potentially at risk'

Tens of thousands of children are potentially at risk if the measles outbreak spreads beyond South West Wales, according to a public health expert.

Dr Meirion Evans from Cardiff University says he expects hundreds more cases to be confirmed in coming days and weeks.

Dr Meirion Evans has warned the measles outbreak could get much more serious.

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Measles outbreak spreads

The measles outbreak concentrated around the Swansea and Neath Port Talbot has spread to part of west Wales. Hywel Dda Health Board has urged parents in the area to ensure their children are vaccinated.