Health officials want to prevent a spread of the epidemic
More hospitals are offering free MMR vaccinations across south Wales in a bid to tackle a measles epidemic.
The number of cases has risen to 693, with health officials warning that too few children aged 10 to 17 are coming forward for MMR jabs.
The epidemic, which is centred on Swansea, is not expected to peak for another four weeks.
Drop-in clinics will be held later for the first time in Cardiff and Newport as a precaution.
It follows a decision by the Cardiff and Vale and Aneurin Bevan health boards to follow the example of Abertawe Bro Morgannwg which held sessions last weekend.
More than 1,700 were vaccinated at drop-in clinics in Swansea, Neath Port Talbot and Bridgend with another 900 vaccinated in the Swansea area last week.
But health officials believe thousands of children in the Swansea area have still not had the MMR (measles mumps rubella) vaccine.
- How safe is it to take children to mainland Europe who have had two doses of the MMR vaccine?
It gives 99% protection against the measles virus.
- What if they have had only one dose of MMR?
One dose is better than none, but two doses is better than one. If you are concerned about travelling to an outbreak area you can bring forward the second MMR dose. Speak to your GP about it.
- What if my children are not vaccinated at all?
The advice is to go to your GP and arrange for them to be immunised as soon as possible before you travel. Measles is a dangerous viral illness that can be fatal.
BBC Health – Measles
Abertawe Bro Morgannwg health board will hold more sessions from 10:00-16:00 BST on Saturday at Swansea’s Morriston and Singleton hospitals along with Neath Port Talbot Hospital and the Princess of Wales Hospital in Bridgend.
Some GP surgeries are also laying on special vaccination sessions during the week, while children will be given the jab at schools in the area when they return next week after the Easter break.
Other health boards have also announced clinics for Saturday as a precaution.
Cardiff and Vale University Health Board is holding sessions at Cardiff Royal Infirmary and at University Hospital Llandough, also from 10:00-16:00 BST.
Aneurin Bevan Health Board is running sessions from 11:00-15:00 BST at Bellevue Surgery in Newport and Ysbyty Ystrad Fawr in Ystrad Mynach.
No appointments are needed for any of the clinics which are for children and teenagers who have not had two MMR jabs.
Dr Tom Porter, consultant in public health medicine for Cardiff and Vale, said the sessions were precautionary as there has not been an outbreak in the area.
He added: “We estimate around 13,000 children under 19 have not had two MMRs and are not adequately protected and would urge parents to take up this opportunity or to contact their GP to make an appointment locally.
“We are starting to see an increase in the number of people who have had the two jabs for MMR in Cardiff and the Vale, which is encouraging, but the number still falls far short of what is needed to stop the spread of what can be a very serious and potentially fatal disease, so it is important everyone is protected.”
Cwm Taf Health Board in the south Wales valleys is not holding drop-in sessions but is advising people to contact their GP for a vaccination.
Public Health Wales (PHW) has warned that despite previous immunisations the outbreak, which began in November, has not been brought under control.
Although the epidemic is based in Swansea, cases continue to be reported across Wales. Officials have raised concerns about the number of cases in Powys.
Measles is caused by a virus spread in droplets and is easy to catch by those who have not been vaccinated.
Typical symptoms of measles include fever, cough, conjunctivitis and a rash. Complications are quite common even in healthy people, and about 20% of reported measles cases experience one or more complication.
The death rate is around one in every 1,000 infected in developed countries.