Prevention worse than the disease?

The population of the Eastern seaboard of the USA appears to be at risk to West Nile Disease, an undoubtedly nasty condition. If contracted, it affects 0.66% people very seriously, but 80% of people don't show any symptoms at all. It's transmitted by mosquitoes.

So US authorities are spraying to try to reduce the mosquito population. And, surprise, surprise, the insecticide (containing Sumithrin) being sprayed in at least some areas can be detrimental to other insects -- including bees -- and some crustaceans. They may be targeting spraying very well and the concentrations may be low, but it seems that information about the spraying isn't exactly being broadcast widely -- this story may have some way to run.