Table 4.
Annual EIR of Anopheles arabiensis from CDC light traps and PSCs in Chano, southwestern Ethiopia*
| Variable | CDC light trap | PSC | |||||
|---|---|---|---|---|---|---|---|
| No. collected | No. positive/no. tested (%) | EIR† | EIR‡ (95% CI) | No. collected | No. positive/no. tested (%) | EIR | |
| Pf EIR | 2,230 | 7/2,184 (0.32) | 17.4 | 17.1 (7.0–34.6) | 437 | 1/436 (0.23) | 0.1 |
| Pv EIR | 2,230 | 1/2,184 (0.046) | 2.5 | 2.4 (0.06–13.4) | 437 | 1/436 (0.23) | 0.1 |
*
EIR = entomologic inoculation rate; CDC = Centers for Disease Control; PSCs = pyrethrum spray catches; CI = confidence interval; Pf = Plasmodium falciparum; Pv = P. vivax.
†
Standard method: 1.605 (no. enzyme-linked immunsorbent assay [ELISA] positive from CDC light trap/no. ELISA tested) × (no. of Anopheles arabiensis collected from CDC light trap/no. catches) × 365,
‡
Alternative method: 1.605 (no. ELISA positive/no. catches) × 365.