Table 2.
Number of female Culex quinquefasciatus mosquito pools collected and tested for West Nile virus by month in Harris County, Texas, 2020–2022
| Year | Month | WNV-Positive mosquito pools (N) | Mosquito pools tested (N) | WNV-Positive mosquito pools (%) |
|---|---|---|---|---|
| 2020 | May | 0 | 354 | 0% |
| June | 0 | 692 | 0% | |
| July | 5 | 945 | 0.5% | |
| August | 3 | 779 | 0.4% | |
| September | 2 | 993 | 0.2% | |
| October | 0 | 757 | 0% | |
| 2021 | May | 0 | 722 | 0% |
| June | 14 | 1,116 | 1.3% | |
| July | 95 | 1,210 | 7.9% | |
| August | 86 | 1,002 | 8.6% | |
| September | 33 | 1,045 | 3.2% | |
| October | 2 | 878 | 0.2% | |
| 2022 | May | 0 | 360 | 0% |
| June | 1 | 621 | 0.2% | |
| July | 15 | 543 | 2.8% | |
| August | 7 | 884 | 0.8% | |
| September | 1 | 650 | 0.2% | |
| October | 1 | 550 | 0.2% |