Table 1.
Rates of Zika virus infection and dissemination (number tested, 95% confidence interval) in mosquitoes 14 d after ingesting defibrinated blood containing virus
| Mosquito species | Mosquito source | Virus source | Virus concn (PFU/ml) | % Infectiona | % Disseminationb | % Dissemination/ Infectionc |
|---|---|---|---|---|---|---|
| Aedes aegypti | Colonized; Costa Rica strain (BEI Resources) | Thawed | 9.2 × 106 | 61 (18, 36–83) | 22 (18, 6–48) | 36 (11, 11–69) |
| Aedes vexans | Wild-caught; Polk Co., MN | Thawed | 9.2 × 106 | 29 (28, 13–49) | 4 (28, <1–18) | 12 (8, <1–53) |
| Wild-caught; Grand Forks Co., ND | Fresh | 2.0 × 105 | 28 (32, 14–47) | 3 (32, <1–16) | 11 (9, <1–48) |
a
Percentage of mosquitoes containing virus in their bodies (number positive/number tested).
b
Percentage of mosquitoes containing virus in their legs (number positive/number tested).
c
Percentage of infected mosquitoes containing virus in their legs (number positive/number tested).