World Vision in Solomon Islands says most families have now received supplies in the outer islands of Western Province badly hit by the earthquake and tsunami.
Claire Beck, who is part of the Rapid Response team on Gizo, says the fast police boats are doing major runs and there have been daily airlifts by helicopter by Australia's aid agency, Ausaid.
She says there are three large communities on Simbo who were severely affected by the disaster and are now in camps while many landslides on Ranongga have damaged the community's food gardens.
Ms Beck says, however, people now have basic supplies.
"There's been daily shipments out to all places so most families would have received about 40 kilograms of rice and a 20 litre jerrycan of clean drinking water. There's also been a number of teams going out with portable water purifiers to ensure that people have access to ongoing clean water."
Ms Beck says there has been one confirmed case of malaria and a number of dysentery cases in the camps but apparently no more than normal for this time of year.