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Table 2 Numbers (%) of containers with lost discs in each post-intervention survey

From: Effectiveness of a novel long-lasting pyriproxyfen larvicide (SumiLarv®2MR) against Aedes mosquitoes in schools in Yangon, Myanmar

Container

na (baseline)

Mean volume (range) (l)

December

January

March

Mayb

Type

Barrel

7

135.7 (100–200)

0 (0)

0 (0)

3 (42.8)

4 (57.1)

Bucket

5

60.0 (5–100)

0 (0)

2 (40.0)

4 (80.0)

4 (80.0)

Cement drum

43

130.2 (50–300)

0 (0)

25 (58.1)

31 (72.1)

34 (79.1)

Cement tank

6

650.0 (100–1000)

0 (0)

1 (16.6)

3 (50.0)

3 (50.0)

Ceramic jar

1

50.0 (50)

0 (0)

0 (0)

1 (100.0)

1 (100.0)

Discarded

2

5.5 (1–10)

0 (0)

1 (50.0)

2 (100.0)

2 (100.0)

Spiritual bowl

10

1.0 (1)

0 (0)

7 (70.0)

9 (90.0)

10 (100.0)

Toilet bowl

18

20.0 (20)

0 (0)

17 (94.4)

18 (100.0)

18 (100.0)

Size

Large (>200 l)

7

621.4 (250–1000)

0 (0)

1 (14.3)

3 (42.8)

3 (42.9)

Medium (10–200 l)

74

92.2 (10–200)

0 (0)

44 (59.5)

58 (78.4)

62 (83.8)

Small (<10 l)

11

1.0 (1)

0 (0)

8 (72.7)

10 (90.1)

11 (100.0)

Place

Indoor

30

22.3 (1–100)

0 (0)

27 (90.0)

29 (96.7)

30 (100.0)

Outdoor

62

169.5 (1–1000)

0 (0)

26 (41.9)

42 (67.7)

46 (74.2)

Total

 

92

121.5 (1–1000)

0 (0)

53 (57.6)

71 (77.2)

76 (82.6)

  1. aNumber of containers that had water continuously from November (after removing 19 containers that lost water or disappeared by December)
  2. bAlthough six new containers with discs appeared in May, they were excluded because they were not original containers that received discs in November