The number of confirmed cases of measles in the Swansea epidemic has risen to 588, Public Health Wales has confirmed.
The latest figure shows 40 new cases of the disease since Wednesday.
Up to 20 new cases a day are being reported by GPs, with 109 new ones in a week over the Easter period.
Health officials have estimated around 3,800 children in the Swansea area have still not had the MMR vaccine and parents are being asked to act.
Special vaccination clinics have been arranged for this weekend, as fears grow about the virus spreading to neighbouring areas.
A man who died in from a suspected case of measles in Wales was infected with the disease at the time of his death, health officials said.
A mother convinced the MMR vaccine led to her son's autism has not immunised her daughter, despite the link being disproved.