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A 73-year-old is dead after contracting the West Nile virus in Louisville.It's the first fatal case in Kentucky this year, and health officials are cautioning people to take precautions to stay safe.Health officials said mosquitoes with the West Nile virus have been found throughout Louisville. But one area in particular is the neighborhoods surrounding Iroquois Park“It's just really scary. In Louisville, here in our little town that we have the West Nile virus,” Louisville resident Anne Sheridan said.Sheridan was watching WLKY on Thursday when she learned mosquitos infected with West Nile were found near her home.“I’m real bad about putting bug spray on before I go outside, but I think I will pay a little bit more attention to it now that it's here,” Sheridan said.Officials with the Department of Public Health and Wellness in Louisville said that's something everyone should do. They also advise removing standing water from yards or gardens, where mosquitoes usually breed.Sheridan said she already does that.“I clean the bird bath every day to make sure that there are no mosquito eggs or anything,” she said.Environmental health supervisor Scott Shrader said mosquitos concentrated in one area can cause problems.“Our criteria is, if we have 50 or more in that trap, then we will fog that area,” Shrader said.Fogging kills the insects, but they can always come back.Doctors suggest keeping an eye on bug bites, even though most people won't feel the effects of the disease.“Most people recover completely and don't even know they are infected with the virus,” Dr. Sarah Moyer said.Others experience symptoms similar to a cold.Moyer said a smaller number of people could even experience disorientation, coma, tremors, seizures and paralysis.People over the age of 60 are most susceptible.But health officials said the threat will end around the first freeze, when the mosquitos die off.“I’m not much of a winter person, but this year, I think I’m ready,” Sheridan said.Health officials said there is one other, non-fatal case of West Nile in Louisville.Mosquitoes samples that tested positive for West Nile were collected in ZIP codes 40205, 40208, 40211, 40212, 40214, 40215, 40216 and 40272.