Ticks are by far the biggest disease vector in the U.S., and Lyme disease is the most common tick-borne illness in the northern hemisphere, causing neurological problems and even permanent cognitive and sensory impairment if not treated.

http://www.pbs.org/newshour/bb/finding-solution-control-lyme-disease-isnt-simple/

The wettest winter in a decade will mean one thing this summer — bugs. Mosquitoes and other disease-spreading insects could breed in record numbers over the next few months. Vector Control experts say these are some of the creatures to watch out for.

http://www.ocregister.com/2017/04/27/bad-bugs-to-watch-out-for-in-southern-california/