Table 5 Changes in infection rates with O. volvulus in blackflies in the sentinel communities
Sentinel community | 1995 | 2000 | 2004 | |||
|---|---|---|---|---|---|---|
Blackflies analysed (N) | Infection rate | Blackflies analysed (N) | Infection rate | Blackflies analysed (N) | Infection rate | |
Corriente Grande | NP | NP | 23500 | 2.1 (0.7–5.0) | 12700 | 0 |
El Tigre | 2550 | 72.7 (42.0–116.0) | 17000 | 9.0 (4.5–16.1) | 10100 | 6.0 (2.05–13.3) |
San Miguel | 3550 | 65.0 (39.0–101.0) | 9600 | 1.1 (0.03–6.4) | 12500 | 0.8 (0.02–4.1) |
Playa de Oro | NP | NP | 10250 | 0 | 9500 | 0 |
Guayabal | NP | NP | 9950 | 0 | 10000 | 0 |
Angostura | NP | NP | 9700 | 0 | 11400 | 0 |
Naranjal | NP | NP | 20450 | 0.5 (0.01–2.8) | 26050 | 0 |