West Nile fever: here to stay and spreading.
The ultimate extent of West Nile virus's range in North America is uncertain but is likely to expand in 2001. Spread chiefly by night-biting Culex mosquitoes, the virus results in infection that most often is asymptomatic or causes a self-limited febrile illness. The elderly, however, are prone to develop neurologic manifestations, including potentially fatal encephalitis.
Pile
J
J
Department of General Internal Medicine, Cleveland Clinic Foundation, OH 44195, USA. pilej@ccf.org
D003937:Diagnosis, Differential; D006801:Humans; D008590:Meningoencephalitis / Q000453:epidemiology / Q000635:transmission* / Q000821:virology; D008875:Middle Aged; D014481:United States / Q000453:epidemiology; D014901:West Nile Fever / Q000145:classification / Q000175:diagnosis / Q000453:epidemiology*; D014902:West Nile virus / Q000472:pathogenicity*