Volume 8, Number 12—December 2002
Research
Vector Competence of California Mosquitoes for West Nile virus
Table 2
Infection and transmission rates for California mosquito species orally infected with 107.1±0.1 PFU/mL of West Nile virus
Species | Source by county | Day transmission attempted | No. tested | Infection ratea | Transmission rateb |
---|---|---|---|---|---|
Culex tarsalis | Yolo | 7 | 30 | 87 | 60 |
14 | 1 | 100 | 100 | ||
Kern | 7 | 15 | 93 | 40 | |
14 | 35 | 74 | 60 | ||
Riverside | 7 | 49 | 94 | 10 | |
14 | 55 | 85 | 62 | ||
Cx. pipiens quinquefasciatus | Kern | 7 | 50 | 86 | 4 |
14 | 50 | 58 | 52 | ||
Riverside | 7 | 60 | 8 | 0 | |
7 | 60 | 13 | 2 | ||
14 | 58 | 28 | 19 | ||
Orange | 7 | 45 | 80 | 9 | |
14 | 50 | 66 | 36 | ||
Cx. p. pipiens | Shasta | 7 | 17 | 100 | 0 |
14 | 31 | 100 | 71 | ||
Cx. stigmatosoma | San Bernardino | 7 | 15 | 67 | 0 |
14 | 48 | 77 | 19 | ||
Cx. erythrothorax | Orange | 7 | 15 | 100 | 33 |
14 | 25 | 100 | 64 | ||
Ochlerotatus dorsalis | Kern | 7 | 30 | 50 | 13 |
14 | 29 | 41 | 34 | ||
Oc. melanimon | San Luis Obispo | 7 | 50 | 46 | 18 |
14 | 60 | 48 | 20 | ||
Oc. sierrensis | Lake | 7 | 40 | 5 | 3 |
14 | 50 | 14 | 6 | ||
Aedes vexans | Riverside | 14 | 22 | 32 | 23 |
Culiseta inornata | Kern | 14 | 28 | 75 | 21 |
aPercent of mosquito bodies positive for WNV.
bPercent of transmission attempts positive for WNV.