FORT WORTH (CBSDFW.COM) – With hundreds of human cases of the West Nile Virus being reported across Texas and more than a dozen related deaths in North Texas it seems some people are overreacting and calling 911 when they’re bitten by a mosquito.

...in the absence of any symptoms of West Nile then a simple mosquito bite is really not a reason for someone to call 911,” said Matt Zavadsky, public affairs director for MedStar Emergency Medical Services.
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“So our only option at that point is to send an ambulance to that call which takes that emergency resource out of the system — to respond to the motor vehicle accidents, the heart attacks — while we assess that mosquito bite on scene and then have the patient sign some paperwork for us, to allow us to leave,” Zavadsky explained...

http://dfw.cbslocal.com/2012/08/24/health-officials-no-need-to-call-911-for-mosquito-bites/