​West Nile Fever

  • Health authorities have sounded an alert and stepped up preventive measures after West Nile fever was detected in three districts of Kerala.
  • West Nile virus (WNV) is a vector-borne pathogen that spreads between birds and mosquitoes. It can also infect humans, horses and other mammals.
  • WNV was first identified in Uganda in 1937. It was further identified in birds in the Nile Delta region in 1953.
  • The virus is prevalent in many parts of the world, including Africa, Europe, the Middle East, North and South America, West Asia and Australia.
  • In 1999, a WNV strain spread to Israel and Tunisia and spread throughout the ....
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