Lima, A, Lovin, D.D., Hickner, P.V., et al. (2015). Evidence for an Overwintering Population of Aedes aegypti in Capitol Hill Neighborhood, Washington, DC. The American Journal of Tropical Medicine and Hygiene. 94(1):231-5.
This article describes a research study demonstrating that Aedes aegypti mosquitoes were present in samples taken in Capitol Hill, Washington, DC throughout 2011-2014. These mosquitoes were not previously thought to travel further north than the average 10 degree Celsius isotherm.