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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