It's small, shanty towns in Port Vila that cause the most concern for those fighting the spread of mosquito-borne illness.
Frederick Yakeula from Vanuatu's public heath team has been inspecting a labyrinth of corrugated iron buildings.
Breeding in stagnant water containers throughout the settlement is the Aedes larvae, which will eventually turn into the same type of mosquito that spreads the Zika virus.
“It's a very big risk for the community, this one,” says Yakeula.