The efforts to vaccinate susceptible children in the Abertawe Bro Morgannwg University Health Board area have been tremendous and we are delighted to see that around half of children needing vaccination have now received the MMR.
But with around 50,000 children in the 10 to 18 age group still not vaccinated, and more than 1,000 cases now reported to us, we cannot be complacent.
While not enough children are vaccinated, this outbreak can easily spread anywhere in Wales.
Therefore we urge parents of children, and young people themselves, to take up opportunities to receive the MMR vaccine as a matter of urgency.
The number of measles cases recorded in the Swansea outbreak has passed 1,000, according to Public Health Wales.
An ITV News/Com Res poll has found 71% of people think parents are acting irresponsibly if they don't get the MMR jab for their children.
71% of people think parents who do not vaccinate their children with MMR vaccine are being irresponsible, a ITV News/Com Res poll suggests.