West Nile virus was unknown in the U.S. when I moved to Idaho in Dec 2000. We now lose about 500 horses and quite a few humans in Idaho each year. The hardest hit areas are about 25 miles north of Pocatello and about 30 miles west.
All the foo foo about providing "mosquito nets" to combat malaria in 3rd world countries would be totally unnecessary if DDT was in use again. It's going to bite us in the butt with food production too.
It's just amazing that up until the late 1960s western civilization was making great progress in controlling and eliminating diseases which were the scourge of mankind. Then the environazis started getting their way.
Now millions are dead because of political correctness. And it is only going to get worse.