Table 8.
Duration (in months) of asymptomatic parasitemia by age and microgeographic locale; prevalence of asymptomatic malaria by age and region; and percent of vector population found in each locale
| Age | Valley bottom | Middle hill | Hilltop | Asymp. prevalence | |
|---|---|---|---|---|---|
| Altitude in meters (Village) | 1430 (Iguhu) | 1500 (Makhokho) | 1580 (Sigalagala) | ||
| Duration (in months) of parasitemia by age | Age 5–9 | 6 | 4 | 3 | 34.4% |
| Age 10–14 | 6 | 4 | 3 | 34.1% | |
| Age | 1 | 1 | 1 | 9.1% | |
| % asymptomatic by region | 52.4% | 23.3% | |||
| % of vectors found in region | 98% | 1% | 1% | ||
| % of 334 asymptomatic episodes in region | 44% | 24.9% | 31.1% |
This region is considered hypoendemic. 15% of asymptomatic episodes lasted 1 month. 38.1% of episodes lasted 2–5 months, and 14.2% of episodes lasted 6–12 months. 32.5% experienced no infection episode. Iguhu is near the Yala River, a major breeding site for An. gambiae mosquitoes (Baliraine et al. 2009)