Table 1. Prevalence of A. lumbricoides, hookworm and T. trichiura infections based on stool examination and serological examination for A. lumbricoides infections during and after mass drug administration with DEC + albendazole in a subset of the treated population that was studied from 2002 to 2009 on Alor Island, Indonesia.
| Year of the study | |||||
|---|---|---|---|---|---|
| 2002 | 2004 | 2007 | 2009 | % reduction 02 vs 09 | |
| No of stool samples examined (qualitatively/quantitatively) | 280/280 | 280/0 | 279/0 | 173/173 | |
| A. lumbricoides % positive (n) | 38.2 (107) | 15.7 (44) | 24.4 (68) | 29.5 (51) | 22.9 |
| Ascaris community egg output1 | 697.9 | / | / | 128.2 | 81.6* |
| Hookworm % positive (n) | 8.9 (25) | 3.6 (10) | 1.8 (5) | 10.4 (18) | -16.5 |
| Hookworm community egg output1 | 5.4 | / | / | 6.9 | -27.8 |
| T. trichiura % positive (n) | 6.8 (19) | 0.4 (1) | 1.8 (5) | 2.3 (4) | 65.9 |
| T. trichiura community egg output1 | 3.1 | / | / | 1.4 | 53.0 |
| No of plasma samples | 476 | 399 | 100 | 91 | |
| % seropositive samples (n) | 67.6 (322) | 22.6 (90) | 23.0 (23) | 14.3 (13) | 78.9* |
| No of samples with both EPG and serology data for Ascaris | 240 | 220 | 68 | 64 | |
| % that are sero + and egg + (n) | 27.5 (66) | 4.5 (10) | 13.2 (9) | 4.7 (3) | |
| % that are sero + and egg–(n) | 37.9 (91) | 15.0 (33) | 14.7 (10) | 6.3 (4) | |
| % that are sero–and egg + (n) | 10.0 (24) | 10.5 (23) | 14.7 (10) | 26.6 (17) | |
| % that are sero–and egg–(n) | 24.6 (59) | 70.0 (154) | 57.4 (39) | 62.5 (40) | |
(* P < 0.01)
1 Community egg output = sum of EPG / total number of tested persons.