Health chiefs say they 'continue to be concerned' at the number of cases of measles in the Swansea and Neath Port Talbot areas.
Nearly 200 people have been diagnosed since the outbreak started in November, with 20 new cases in the last week alone.
More than 30 schools and nurseries have been affected so far.
Public Health Wales says it is working closely with Abertawe Bro Morgannwg University Health Board to combat the outbreak.
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Dull and damp for much of Wales as we start the day, with drier and brighter weather on the way this afternoon.
The heaviest of the rain will ease overnight. Remaining mild but breezy around coastal areas.
Every time you give blood, you save a life. And for 70 years, more than 10 million units of blood have been donated in Wales.