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Table 2 Circulating filarial antigens (CFA) and antibodies to Bm14 as seen in the school study

From: Urban lymphatic filariasis in the metropolis of Dar es Salaam, Tanzania

Ward

No. children registered

CFA

Bm14

  

No. testeda(% of registered)

Mean age in years (range)

Girl:boy ratio

No. tests positive (%)

No. tested (% of registered)

No. tests positive (%)

GMIbfor all examined

GMIbfor positives only

Mchikichini

347

276 (79.5)

7.5 (5–12)

0.9

7 (2.5)

271 (78.1)

20 (7.0)

0.1474

0.7478

Buguruni

582

286 (49.1)

7.6 (5–11)

1.0

7 (2.4)

270 (46.4)

9 (3.3)

0.1249

1.5498

Vingunguti

782

303 (38.7)

7.5 (5–12)

1.1

16 (5.3)

298 (38.1)

17 (5.7)

0.1445

0.9454

Ukonga

692

299 (43.2)

7.4 (5–11)

0.8

3 (1.0)

286 (41.3)

7 (2.5)

0.0847

1.1687

Majohe

700

268 (38.3)

7.7 (6–12)

1.7

12 (4.5)

242 (34.6)

18 (7.4)

0.1368

1.1817

Chanika

552

265 (48.0)

7.8 (5–13)

1.0

5 (1.9)

255 (46.2)

10 (3.9)

0.0962

1.0394

Total

3655

1697 (46.4)

7.6 (5–13)

1.0

50 (3.0)

1622 (44.4)

81 (5.0)

0.1223

1.0338

  1. The pupils were from primary schools located in six wards in Ilala District, Dar es Salaam. All pupils tested for antibodies to Bm14 were also tested for CFA.
  2. a) Excluding 29 children with invalid tests (9, 4, 5, 2, 2, 7 from Mchikichini to Chanika, respectively).
  3. b) Geometric mean intensity in OD-values.