May is one of the worst months for ticks and IU biologists have gradually seen more types of ticks in the area.
Purdue University's entomology collection includes 2 million specimens, some over 100 years old.
Marion county becomes the 16th in the state to report the virus in 2014. So far, no human cases have been found.
The current warm weather isn't responsible for the buzzing of cicadas -- warm weather earlier this year is.
Mosquito populations are much larger than normal because of the mild winter and warm spring.