Volume 22, Number 10—October 2016
Letter
Culex pipiens and Aedes triseriatus Mosquito Susceptibility to Zika Virus
Matthew T. Aliota
, Stephen A. Peinado, Jorge E. Osorio, and Lyric C. Bartholomay
, Stephen A. Peinado, Jorge E. Osorio, and Lyric C. Bartholomay
Table
Competence of mosquitoes, by species, as Zika virus vectors, 14 days after peroral infection, United States*
| Mosquito species | No. virus-positive/no. tested (%) |
||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Biological replicate 1, mean 6.02 log10 PFU/mL ± SD 0.67 |
Biological replicate 2, mean 4.74 log10 PFU/mL ± SD 0.06 |
Biological replicate 3, mean 6.83 log10 PFU/mL ± SD 0.45 |
|||||||||
| I | D | T | I | D | T | I | D | T | |||
| Culex pipiens† | 0/20 (0) | 0/20 (0) | 0/20 (0) | 0/10 (0) | 0/10 (0) | 0/10 (0) | 0/30 (0) | 0/30 (0) | 0/30 (0) | ||
| Aedes triseriatus‡ | ND | ND | ND | 0/20 (0) | 0/20 (0) | 0/20 (0) | 4/13 (31) | 0/4 (0) | 0/4 (0) | ||
| Ae. albopictus§ | 9/9 (100) | 6/9 (67) | 2/9 (22) | 1/6 (17) | 0/1 (0) | 0/1 (0) | ND | ND | ND | ||
| Ae. aegypti¶ | ND | ND | ND | ND | ND | ND | 17/17 (100) | 12/17 (71) | 4/17 (24) | ||
*Zika virus strain PRVABC59 (GenBank accession no.KU501215) was originally isolated from a traveler to Puerto Rico in December 2015. I, infected; D, disseminated; ND, no data; T, transmitted.
†Originated from egg rafts collected in Iowa in 2002 and colonized at the Iowa State University Medical Entomology Laboratory.
‡Originated from eggs collected in Iowa in 2002 and 2003 and colonized at the Iowa State University Medical Entomology Laboratory.
§Originated from eggs collected in Missouri in 2002 and colonized at the Illinois Natural History Survey.
¶Black-eyed Liverpool strain.
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