West Nile virus is a neurotropic flavivirus that has emerged globally as
a primary cause of viral encephalitis. Infection of humans and other
vertebrate animals is associated with a febrile illness that can
progress to a lethal encephalitis or flaccid paralysis syndrome. Its
appearance in the Western Hemisphere in 1999 and the corresponding
increase in global disease burden over the last decade have been
accompanied by intensive study, including the entry of many scientists
into the field. Breakthroughs have been made in understanding the unique
transmission pattern between the vector and the multiple avian and
mammalian hosts and targets. Studies in mammalian systems have dissected
the viral and host factors that determine the pathogenesis and outcome
of West Nile virus infection. On the basis of these experiments,
progress has been made on the identification of genetic factors that
predispose to severe human disease. Thus, in a remarkably short period
of time, insight has been gained on a wide variety of disciplines
related to West Nile virus biology. The aim of this book was to assemble
an up-to-date and cutti- edge anthology from the leading experts in the
field. The chapters are balanced by submissions from newcomers who have
made significant recent contributions with those from established
investigators who have dedicated their careers to the study of West Nile
virus.