Table 2.
Infection, dissemination and transmission rates in Culex australicus and Culex annulirostris exposed to 10 8.1 and 10 7.6 TCID 50 /mL of the WNV KUN2011 and WNV KUN2009 strains, respectively, and tested at day 12 post-exposure
| Infection a | Dissemination b | Dissemination/infection c | Transmission d | Transmission/dissemination e | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Species | KUN2011 | KUN2009 | KUN2011 | KUN2009 | KUN2011 | KUN2009 | KUN2011 | KUN2009 | KUN2011 | KUN2009 | ||||||||||
| Cx. australicus | 68 | (17/25) | 50 | (11/22) | 60 | (15/25) | 41 | (9/22) | 88 | (15/17) | 82 | (9/11) | 20 | (5/25)* | 18 | (4/22)* | 33 | (5/15)* | 44 | (4/9) |
| Cx. annulirostris | 68 | (17/25) | 60 | (9/15) | 68 | (17/25) | 60 | (9/15) | 100 | (17/17) | 100 | (9/9) | 68 | (17/25) | 53 | (8/15) | 100 | (17/17) | 89 | (8/9) |
aPercentage of mosquitoes containing virus in their bodies (number positive/number tested).
bPercentage of mosquitoes containing virus in their legs and wings (number positive/number tested).
cPercentage of infected mosquitoes containing virus in their legs and wings (number positive/number infected).
dPercentage of mosquitoes containing virus in the saliva expectorates (number positive/number tested).
ePercentage of mosquitoes with a disseminated infection containing virus in the saliva expectorates (number positive/number disseminated).
*Fisher’s exact test P-value <0.05 for comparisons between Cx. australicus and Cx. annulirostris.