Table 1. Characterization of the study groups.
| 2KK-NEG | 2KK-NEG | 2KK-POS | |
|---|---|---|---|
| non-endemic area n = 41 | endemic area n = 41 | endemic area n = 48 | |
| Age (year)* | 39.8 ± 19.1 | 51.7 ± 18.4 | 28.8 ± 19.1 |
| Range (year) | 10–93 | 17–89 | 7–80 |
| Gender | |||
| Male | 10 (24%) | 16 (39%) | 29 (60%) |
| Female | 31 (76%) | 25 (61%) | 19 (40%) |
| 2KK (epg)** | 0 | 0 | 276.0 ± 440.0 |
| Helminths | 0 | 1 (2.4%) | 9 (18.8%) |
| Hookworm | 0 | 0 | 7 |
| Enterobius vermicularis | 0 | 1 | 2 |
| Intestinal protozoa | 7 (17.1%) | 22 (53.7%) | 23 (47.9%) |
| Entamoeba coli/histolytica | 5 | 22 | 19 |
| Giardia lamblia | 1 | 0 | 2 |
| E. coli/histolytica + G. lamblia | 1 | 0 | 2 |
*Arithmetic mean ± SD; 2KK, infection intensity calculated by reading two slides stool by the Kato-Katz method; epg, eggs per gram of feces
** arithmetic mean ± SD.