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Table 4 Details of interim surveys done in provinces endemic for Brugia malayi

From: How Thailand eliminated lymphatic filariasis as a public health problem

Province

Year

Age-group surveyed

Number of IUs surveyed

Total population in IUs surveyed

Total number of people tested in IUs surveyed

Number of IUs with positive result

Total number of population in IUs where found positive

Total number of people tested in IUs where found positive

Number of positive cases

Highest prevalence observed in IUs surveyed (range)

Microfilaria (mf) surveys

Surat Thani

2002

All

4

2580

1447

4

2580

1447

5

10.0% (0.2–10.0%)

2003

All

1

587

454

0

0

0

0

0

2004

All

1

591

475

0

0

0

0

0

2005

All

2

1585

978

1

632

549

2

0.4% (0–0.4%)

Nakhon Si Thammarat

2002

All

1

613

609

0

0

0

0

0

2003

All

2

777

757

0

0

0

0

0

2004

All

2

879

741

1

747

624

2

0.3% (0–0.3%)

2005

All

2

873

672

0

0

0

0

0

Krabi

2002

All

1

425

403

0

0

0

0

0

2003

All

2

653

382

0

0

0

0

0

2004

All

2

654

420

0

0

0

0

0

2005

All

1

431

362

0

0

0

0

0

Narathiwat

2002

All

28

15 501

11 791

23

13 125

11 119

84

3.5% (0.2–3.5%)

2003

All

25

18 873

12 852

15

10 372

7211

32

1.6% (0.2–1.6%)

2004

All

20

14 072

9239

9

7281

4683

18

1.1% (0.1–1.1%)

2005

All

24

18 373

10 097

16

11 872

6490

33

1.6% (0.1–1.6%)

2007

All

34

28 557

17 512

15

15 670

8589

19

2.1% (0.1–2.1%)

2008

All

35

29 720

18 931

5

3982

2295

5

0.5% (0.2–0.5%)

2009

All

23

19 975

14 000

6

6958

4642

13

0.5% (0.1–0.5%)

  1. IUs Intervention units