Public Health Wales has reported that the number of measles cases has risen to 886, as children have gone back to school after Easter. 25-year-old Gareth Williams died during the epidemic, it has not been confirmed whether measles was the cause.
Daybreak's Health Editor Dr Hilary Jones said that we do need to be concerned by the measles outbreaks.
He said, "it hasn't reached a peak yet", with more cases to come as the children return back to school following the Easter break.
He added: "You only have to be in the same room with someone as measles and if you are not immune you will pick it up."
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.