[AUDIO LOGO] KATHY CAWCUTT: Yeah. So West Nile virus is a virus that we see from a family called flaviviruses that are viruses that cause infection that tend to come from animals through insect vectors like mosquitoes. West Nile, very specifically, is a virus that we have here locally that spreads from birds to mosquitoes and then can infect humans when a mosquito that took a blood meal from a bird that's infected then bites a human after the fact. 

And that infection can range dramatically from the human standpoint, from having no symptoms to having very severe symptoms, including a very small number of people who die from that infection every year.