Relief supplies are getting out to affected areas, but there is growing concern about the risk of disease.
4,035 people are in 84 evacuation centres, most of them in the northern island of Vanua Levu, which bore the brunt of the category five storm.
Health officials are now concerned about the possible spread of diseases like leptospirosis and dengue fever - particularly with more heavy rain forecast this weekend.
The government said work crews and relief supplies have made it to all the affected areas, but items like water tanks and shelter are needed.