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Volume 13, Number 6—June 2007

Research

West Nile Virus Viremia in Eastern Chipmunks (Tamias striatus) Sufficient for Infecting Different Mosquitoes

Kenneth B. Platt*Comments to Author , Bradley J. Tucker*, Patrick G. Halbur*, Sonthaya Tiawsirisup†, Bradley J. Blitvich*, Flor G. Fabiosa*, Lyric C. Bartholomay*, and Wayne A. Rowley*
Author affiliations: *Iowa State University, Ames, Iowa, USA; †Chulalongkorn University, Bangkok, Thailand;

Main Article

Table 2

Infection rates of Aedes triseriatus (Say), Ae. vexans (Meigen), and Culex pipiens (L.) after feeding on viremic eastern chipmunks (Tamias striatus) infected with West Nile virus (WNV)

WNV serum titer* Ae. triseriatus
Ae. vexans
Cx. pipiens
No. blood meals† % Positive 
(no. blood-fed) No. blood meals % Positive 
(no. blood-fed) No. blood meals % Positive
 (no. blood-fed)
3.1–4.4 3 0 (27) 2 0 (10) 2 0 (6)
4.8 2 0 (19) 1 0 (1) 1 0 (1)
5.6–5.8 2 23 (13) 2 0 (4) 1 0 (1)
6.0–6.9 5 0 (14) 3 15 (13) 2 50 (2)
7.2–7.8 2 25 (12) 2 40 (5) ND‡

*Log10, PFU of WNV.
†No. chipmunks providing blood meals.
‡ND, not done.

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