West Nile Virus. Emily Zielinski-Gutierrez, DrPH Lisa Lundgren, RN, MSN, FNP-C Division of Vector Borne Infectious Diseases (DVBID) National Center for Infectious Diseases Centers for Disease Control and Prevention Fort Collins, Colorado. West Nile Virus (WNV) before 1996.
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Emily Zielinski-Gutierrez, DrPH
Lisa Lundgren, RN, MSN, FNP-C
Division of Vector Borne Infectious Diseases (DVBID)
National Center for Infectious Diseases
Centers for Disease Control and Prevention
Fort Collins, Colorado
Most important cycle is from mosquito to bird to mosquito
“Incidental” infections: unlikely amplifying hosts
Incidence per million
WNND: West Nile Neuroinvasive Disease *Reported as of 4/9/2004
Nearly 50 species of mosquitoes capable (at least in the lab) of transmitting WNV
Culex tarsalis feeding
For every case of illness
involving the brain or spinal
~150 total infections
(<0.1% of total infections)
Very crude estimates
“West Nile Fever”
A: By the time someone gets sick, the virus is long-gone. The test measures the body’s reaction to the virus, to determine if the virus was present in the body recently or in the more distant past.
A: Several agencies and companies are working on a vaccine for humans, and one is planned for testing next year.