Table 2. Transmission of yellow fever virus by infected Aedes aegypti mosquitoes to suckling micea.
| Ae. aegypti strain | Virus strain | No. mice infected/ No. exposed (%) | HI titer for 4 U of antigen |
||
|---|---|---|---|---|---|
| YFV | SLEV | WNV | |||
| Santa Cruz- | CENETROP-322 | 1/5 (20)b | 0 | 0 | 0 |
| 0 | 0 | 0 | |||
| 320 | 0 | 0 | |||
| 0 | 0 | 0 | |||
| 0 | 0 | 0 | |||
| REX-D | Jimenez | 4/5 (80)c | NT | NT | NT |
| NT | NT | NT | |||
| NT | NT | NT | |||
| NT | NT | NT | |||
| NT | NT | NT | |||
| REX-D | Asibi | 3/5 (60)b | 160 | 0 | 0 |
| 0 | 0 | 0 | |||
| 0 | 0 | 0 | |||
| 80 | 0 | 0 | |||
| 40 | 0 | 0 | |||
aHI, hemagluttination-inhibition; YFV, yellow fever virus; SLEV, St. Louis encephalitis virus; WNV, West Nile virus; NT, not tested. bInfection determined by presence of anti-YF antibodies in mice sera (HI test). 0 indicates a titer of <1:20. cInfection determined by death/virus detection for suckling mice.