Table 1.
Gastrointestinal parasites identified in faecal samples from children in Siem Reap and surrounding provinces, January 2006–September 2011
| Total number n = 16 372 (% total) | Under 1 year n = 4738 (%a) | 1–5 years n = 6439 (%a) | 6–10 years n = 2748 (%a) | 11–16 years n = 2447 (%a) | |
|---|---|---|---|---|---|
| Protozoa | |||||
| Giardia lamblia | 1311 (8.0) | 59 (67.0) | 709 (53.4) | 316 (34.0) | 227 (29.4) |
| Blastocystis hominis | 180 (1.1) | 5 (5.7) | 66 (5.0) | 50 (5.4) | 59 (7.6) |
| Entamoeba histolytica | 97 (0.7) | 5 (5.7) | 36 (2.7) | 33 (3.6) | 23 (3.0) |
| Cryptosporidium parvum | 3 (0.02) | 0 | 2 (0.2) | 1 (0.1) | 0 |
| Helminths | |||||
| Nematodes | |||||
| Hookworm | 835 (5.1) | 7 (8.0) | 267 (20.1) | 290 (31.2) | 271 (34.8) |
| Strongyloides stercoralis | 429 (2.6) | 9 (10.2) | 149 (11.2) | 140 (15.1) | 131 (16.8) |
| Enterobius vermicularis | 51 (0.3) | 1 (1.1) | 23 (1.7) | 17 (1.8) | 10 (1.3) |
| Ascaris lumbricoides | 41 (0.3) | 0 | 20 (1.5) | 12 (1.3) | 9 (1.2) |
| Trichuris trichiura | 9 (0.05) | 0 | 5 (0.4) | 3 (0.3) | 2 (0.1) |
| Cestodes | |||||
| Hymenolepis nana | 88 (0.5) | 0 | 23 (1.7) | 39 (4.2) | 26 (3.3) |
| Taenia saginata | 10 (0.06) | 0 | 5 (0.4) | 1 (0.1) | 4 (0.5) |
| Taenia solium | 24 (0.2) | 1 (1.1) | 13 (1.0) | 9 (1.0) | 1 (0.1) |
| Taenia species | 6 (0.04) | 0 | 0 | 4 (0.4) | 2 (0.2) |
| Hymenolepis diminuta | 2 (0.01) | 0 | 0 | 0 | 2 (0.2) |
| Trematodes | |||||
| Opisthorchis/Clonorchis species | 14 (0.09) | 0 | 0 | 6 (0.6) | 8 (1.0) |
| Schistosoma species | 5 (0.03) | 0 | 3 (0.2) | 2 (0.2) | 0 |
| Fasciola hepatica | 3 (0.02) | 0 | 2 (0.2) | 1 (0.1) | 0 |
| Unidentified parasite | 13 (0.08) | 1 (1.1) | 4 (0.3) | 4 (0.4) | 4 (0.5) |
| Total | 3121 (2756b) | 88 (83b; 3.0%c) | 1327 (1196b; 43.4%c) | 928 (799b; 29.0%c) | 779 (678b; 24.6%c) |
aPercentage of those positive by age group (either < 1 year, 1–5 years, 6–10 years or 11–15 years).
bNumber of disease episodes.
cPercentage of disease episode by age (number in age group/total number of episodes).