Table 1. Serial replicates (n = 3) of soil-transmitted helminth eggs spiked in one gram of parasite-free faeces according to infection intensities selected from WHO guidelines.
| Trichuris spp. | Ascaris spp. | Necator americanus |
|---|---|---|
| Low intensity infections | ||
| 1–999* | 1–4,999* | 1–1999* |
| 5 | 5 | 5 |
| 10 | 10 | 10 |
| 50 | 50 | 50 |
| 100 | 100 | 100 |
| 500 | 150 | 500 |
| 500 | 1,000 | |
| 2,000 | 1,500 | |
| Moderate-Intensity infections | ||
| 1,000–9,999* | 5,000–49,999* | 2,000–3,999* |
| 1,000 | 5,000 | 2,000 |
| 2,000 | 10,000 | 3,000 |
| 5,000 | 25,000 | |
| 7,500 | ||
| High-intensity infections | ||
| ≥10,000* | ≥50,000* | ≥4,000* |
| 10,000 | 50,000 | 4,000 |
| 15,000 | 6,000 | |
| 8,000 | ||
* Classes of infection intensities for soil-transmitted helminths as per WHO guidelines.