Swansea measles epidemic: Author on media role in MMR vaccine take up
Public Health officials say they are concerned at the low take up of the measles vaccine in the Swansea area despite the number of cases doubling to epidemic levels in the past three weeks.
So far more than 400 cases have been reported.
Some experts have explained the historically low uptake on widely-reported research from 1998 which suggested a link between the MMR vaccine and autism.
So, how much of a role has the media played in producing the current problem?
Dr Tammy Boyce, from Cardiff, has written a book on the topic - Health, Risk and News, and she spoke to Gareth Lewis on BBC Radio Wales.