Table 3.
Distribution of geohelminths by year
| Year | No. of samples studied n = 2062 | No. of positive samples number (%) Total 189 | Mixed infection Total 29 | Percent distribution | ||||||||||||||
| A. lumbricoides | T. trichiura | Hookworm | ||||||||||||||||
| Range | AM/GM | L | M | H | Range | AM/GM | L | M | H | Range | AM/GM | L | M | H | ||||
| 1999 | 103 | 09(8.7) | 2 | 356 – 88596 | 31532/554 | 33.3 | 33.3 | 33.3 | 112 – 1212 | 460/128 | 66.6 | 33.3 | - | 4656 – 8564 | 6632/1121 | - | - | 100.0 |
| 2000 | 127 | 12(9.4) | 3 | 578 – 99624 | 26505/897 | 42.8 | 14.2 | 42.8 | 102 – 924 | 523/108 | 100.0 | - | - | 4438 – 5172 | 4877/3284 | - | - | 100.0 |
| 2001 | 173 | 12(6.9) | 6 | 412 – 110124 | 41262/3979 | 37.5 | 25.0 | 37.5 | 88 – 1278 | 614/175 | 80.0 | 20.0 | - | 2516 – 5554 | 2632/1169 | - | 80.0 | 20.0 |
| 2002 | 304 | 24(7.9) | 6 | 456 – 112342 | 42783/4708 | 84.6 | 15.3 | - | 48 – 720 | 402/177 | 100.0 | - | - | 1302 – 4122 | 2327/1432 | 33.3 | 44.4 | 22.2 |
| 2003 | 451 | 38(8.4) | 5 | 162 – 6778 | 2477/1251 | 95.8 | 4.1 | - | 24 – 578 | 375/155 | 100.0 | - | - | 226 – 4664 | 1879/1191 | 57.1 | 23.8 | 19.0 |
| 2004 | 653 | 59(9.0) | 5 | 24 – 4762 | 2033/352 | 100.0 | - | - | 28 – 234 | 78/69 | 100.0 | - | - | 232 – 5236 | 3008/2054 | 63.6 | 18.1 | 18.1 |
| 2005* | 251 | 35(13.9) | 2 | 138 – 4654 | 368/212 | 100.0 | - | - | 78 – 172 | - | 100.0 | - | - | 412 – 912 | 530/47 | 100.0 | - | - |
• *Up to May
• Intensities are defined according to WHO Criteria (Montresor A et al, 1998)
• Note: Percentages are given in parenthesis.
• L – Light; M – Moderate; H – Heavy infection.