The results of a post-mortem examination on a man who had measles when he died were "inconclusive", Swansea Coroner's Office has said.
An inquest into Gareth Colfer-Williams' death is due to be opened next Tuesday.
Public Health Wales said last week that initial tests showed he had measles when he died, but that it was not confirmed if measles was the cause of his death.
83 people have now been hospitalised since the outbreak started, but Mr Colfer-Williams is the only suspected death.
More top news
Some brighter spells in between, especially later in the day but feeling cold despite higher temperatures than recent days.
The Met Office has issued a yellow 'be aware' weather warning of ice for parts of Wales overnight and into tomorrow morning.
A report says that sex and relationship education in Wales is too focused on biology.