Table 6.
Transmission Assessment Surveys (TAS) 2012–2017: Coverage and results
| Year | Number of provinces | Number of EUs | Number of IUs | Number of children tested | Speciesa/Test | Number children positive for antigen or antibody b/ critical cut off value | Number of mf positive children c | Contact survey result |
|---|---|---|---|---|---|---|---|---|
| 2012– | 10 | EU-1 | 260 | 1786 | WB/Ag | 0 /11 | 0 | – |
| 2013 (TAS-1) | EU-2 | 10 | 129 | BM/Ab | 1 / 2 | 0 | – | |
| EU-3 | 87 | 1018 | BM/Ab | 7/16 | 2 | Negative | ||
| 2015 (TAS-2) | 1 | EU-3.1 | 18 | 284 | BM/Ab | 2 / 3 | 0 | – |
| EU-3.2 | 32 | 506 | BM/Ab | 3 / 6 | 0 | – | ||
| EU-3.3 | 37 | 506 | BM/Ab | 6 / 6 | 2 | Negative | ||
| 2016–2017 (TAS-3) | 11 | EU-1 | 260 | 2233 | WB/Ag d | 0 /11 | 0 | – |
| EU-2 | 10 | 144 | BM/Ab | 0 / 2 | 0 | – | ||
| EU-3.1 | 18 | 284 | BM/Ab | 0 / 3 | 0 | – | ||
| EU-3.2 | 32 | 506 | BM/Ab | 0 / 6 | 0 | – | ||
| EU-3.3 | 37 | 530 | BM/Ab | 4 / 6 | 3 | Negative |
EUs Evaluation units; IUs: Intervention units
a WB: Wuchereria bancrofti; BM: Brugia malayi
b Antigen (Ag) with immunochromatographic test (ICT); Antibody (Ab) with Brugia Rapid test
c Among Ag or Ab positive children
d Filaria Test Strip (FTS) was used instead of ICT