From 32 households collected in March 2016, the number of Aedes larvae collected at
each household was displayed on Google Earth (Figure 4a). House indices for Ae. aegypti and
Ae. albopictus were very high (Table 2). WHO classified dengue high risk area as the house
index is a greater than 5%. This indicates that Muang Nakhon Si Thammarat is a dengue high
risk area.