Volume 29, Issue 1
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645



F progeny obtained from field-collected were evaluated for susceptibility to infection with western equine encephalomyelitis (WEE) virus by intrathoracic inoculation and by oral imbibition of virus-blood suspensions through a membrane. Mosquitoes were uniformly susceptible to infection by intrathoracic inoculation of three strains of WEE virus, but minimum infective doses varied as much as 2,000 to 12,000-fold between strains by membrane feeding. Dose-response data obtained by membrane feeding also indicated that field strains of were quite heterogeneous in their susceptibility to WEE virus since some individual mosquitoes could be infected by ingestion of low virus concentrations while others could not be infected by a 20,000-fold increase in virus concentration. Moreover, showed a greater affinity for a WEE viral strain isolated from this species than for a WEE viral strain isolated from , even though the site, date of collection, and passage history of these isolates were identical. Field strains of were relatively refractory to oral infection with WEE virus.


Article metrics loading...

The graphs shown below represent data from March 2017
Loading full text...

Full text loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error