WHO | Zika virus

Zika virus is an emerging mosquito-borne virus that was first identified in Uganda in 1947 in rhesus monkeys through a monitoring network of sylvatic yellow fever. It was subsequently identified in humans in 1952 in Uganda and the United Republic of Tanzania. Outbreaks of Zika virus disease have been recorded in Africa, the Americas, Asia and the Pacific.

Fact sheet Updated 15 April 2016

  • Zika virus disease is caused by a virus transmitted primarily by Aedes mosquitoes
  • People with Zika virus disease can have symptoms that can include mild fever, skin rash, conjunctivitis, muscle and joint pain, malaise or headache.
  • These symptoms normally last for 2-7 days
  • There is no specific treatment or vaccine currently available
  • The best form of prevention is protection against mosquito bites
  • The virus is known to circulate in Africa, the Americas, Asia and the Pacific

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