First aid supplies are due to arrive in a few hours time for locals on the most remote parts of the Lau group of islands in Fiji.
Northern parts of the Lau and Lomaiviti island groups were the worst hit last week as Cyclone Tomas pounded coastlines, bringing swells of up to eight metres.
An estimated 30 thousand people are now thought to be at risk of developing the deadly disease typhoid.
Unicef's Deputy Representative for the Pacific, Tim Sutton, says a ship set sail yesterday and will make its way through the islands during the coming week.
"Emergency health kits, these are basic medical supplies, drugs, equipment for a thousand people for three months, there are ten of those kits on board that we provided. There are some tents to replace damaged classrooms water containers and water purification tablets, there's tarpaulins, shelter material, quite a bit of stock onboard."
