NDTV: Winter was oddly mild in northern Texas in 2012, a year that saw few snowflakes and barely any ice. When the cold failed to show up, the spring mosquitoes arrived in droves, carrying disease.
The insects multiplied during an unusually muggy May, when temperatures hit the 90s and then stayed there. On June 20, Dallas recorded the season's first case of West Nile virus. By late August, there were nearly 400.
Nineteen people would die in the greater Dallas area in the worst West Nile outbreak...