Table 1.
Extrinsic incubation of three strains of WNV at 22 and 30°C in Cx. tarsalis
| Temperature | Virus | Time point |
||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |
2 |
3 |
4 |
5 |
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| DPF | I | T | DPF | I | T | DPF | I | T | DPF | I | T | DPF | I | T | ||
| 22°C | NY99 | 10 | 100 (n = 16) | 13 | 12 | 95 (n = 19) | 11 | 14 | 100 (n = 5) | 0 | 16 | 100 (n = 15) | 60 | 18 | 100 (n = 14) | 43 |
| COAV03 | 10 | 100 (n = 14) | 7 | 12 | 89 (n = 19) | 12 | 14 | 100 (n = 19) | 32 | 16 | 55 (n = 20) | 45 | 18 | 100 (n = 20) | 60 | |
| KERN11 | 10 | 93 (n = 14) | 15 | 12 | 100 (n = 16) | 6 | 14 | 100 (n = 18) | 28 | 16 | 100 (n = 17) | 41 | 18 | 100 (n = 20) | 40 | |
| 30°C | NY99 | 2 | 90 (n = 21) | 0 | 5 | 100 (n = 19) | 5 | – | – | – | 8 | 100 (n = 20) | 65 | 10 | 100 (n = 16) | 100 |
| COAV03 | 2 | 76 (n = 25) | 0 | 4 | 77 (n = 22) | 38 | 6 | 100 (n = 23) | 22 | 8 | 95 (n = 21) | 57 | 10 | 100 (n = 20) | 65 | |
| KERN11 | 2 | 100 (n = 21) | 0 | 5 | 84 (n = 25) | 18 | – | – | – | 8 | 100 (n = 21) | 48 | 10 | 100 (n = 20) | 60 | |
DPF, days postfeeding; I, percent infected; n, number tested; T, percent of blood-fed mosquitoes transmitting.