Brian MurphyEnvironmental Education
School District of Lee County
Lee County Mosquito Control District
Neil WilkinsonFlorida Gulf Coast University
Disease transmission
300 – 500 million cases per year
approximately 3 million deaths
200,000 cases
30,000 deaths
50 million cases
(head) (inflamation)
West Nile Virus Transmission Cycle
West Nilevirus
West Nilevirus
Mosquito vector
Incidental infections
Bird reservoir hosts
Incidental infections
West Nile Virus
•Flu-like illness
•Moderate to high fever
•Headache, sore throat, backache, tiredness
•Rash
•meningitis or encephalitis
•Most fatal cases >50 years old.
West Nile Outbreak 2003
9862 human cases
2862 with neurological symptoms
284 deaths
West Nile Outbreak 20042,470 human cases *
88 Deaths
* reported cases to the Centers for Disease Control as of Feb. 16, 2005
41 cases in FL with 2 death
