Table 4.
Mosquito species tested for West Nile virus in Los Angeles County, 2004, with infection incidence per 1,000 mosquitoes as calculated by bias-corrected maximum likelihood estimation methods with skewness-corrected 95% confidence intervals using the PooledInfRate software add-in*
| Species | No. pools submitted | No. positive pools | MLE | 95% CI | |
|---|---|---|---|---|---|
| Lower | Upper | ||||
| Anopheles hermsi | 43 | 1 | 0.74 | 0.04 | 3.58 |
| Culesita incidens | 133 | 0 | 0 | – | – |
| Cs. inornata | 7 | 0 | 0 | – | – |
| Cs. particeps | 7 | 0 | 0 | – | – |
| Culex erythrothorax | 440 | 4 | 0.19 | 0.06 | 0.47 |
| Cx. quinquefasciatus | 1,558 | 313 | 6.20 | 5.55 | 6.91 |
| Cx. restuans | 2 | 0 | 0 | – | – |
| Cx. stigmatosoma | 71 | 6 | 4.53 | 1.89 | 9.31 |
| Cx. tarsalis | 172 | 19 | 3.91 | 2.44 | 5.98 |
| Cx. thriambus | 22 | 2 | 2.87 | 0.52 | 9.58 |
*
MLE = maximum likelihood estimation; CI = confidence interval.