Larval indices ratio

(Percentage)

Percentage of larval indices (%)

Five primary schools

Students’ households

Pre (n = 5)

Post* (n = 5)

Pre (n = 305)

Post (n = 275)

-The number of positive containers per 100 houses inspected: BI (BI < 50)

200

220

754

616

-Percentage of houses infested with larvae and/or pupae; the House Index: HI (HI < 10)

60

60

77

81

-Percentage of water-holding containers infested with larvae and/or pupae: CI (CI < 1)

8

10

35

32