Table 1. Filariasis infection parameters by age in Usino villages just prior to the first round of mass drug administration.
| Age Range | Mf (%) | CFA (%) | Bm14 (%) |
| 6–10 | 3/125 (2.4) | 22/120 (18.3) | 43/120 (35.8) |
| 11–15 | 7/90 (7.8) | 25/87 (28.7) | 40/87 (46.0) |
| 16–20 | 13/60 (21.7) | 27/60 (45) | 37/60 (61.7) |
| 21–30 | 31/131 (24.4) | 78/128 (60.9) | 95/129 (73.6) |
| 31–40 | 24/80 (30.0) | 52/79 (65.8) | 54/79 (68.4) |
| 41–50 | 24/49 (29.2) | 34/47 (72.3) | 37/48 (77.1) |
| 51+ | 13/37 (35.1) | 27/37 (73.0) | 26/37 (70.3) |
| Total | 106/571 (18.6) | 265/558 (47.5) | 332/560 (59.3) |
Abbreviations: Mf, microfilaremia; CFA, circulating filarial antigenemia; Bm14, antibodies to recombinant filarial antigen Bm14.
Data shown are the number of positive tests and the total number of tests performed (% positive).