Fiaalii Mariner was admitted to hospital in Samoa suffering from the tropical disease within the first six weeks of landing in the country with his wife and his two youngest children.
His condition deteriorated so badly he was not able to be airlifted to New Zealand for further treatment.
A post on Givealittle said the father-of-two, who is believed to also have two other children, died and asked for those who had donated to pray for his wife and the family.
