Zika was first detected in Africa in the 1940s but was unknown in the Americas until last year 2014
The mosquito-transmitted disease has been confirmed in countries including Brazil, Panama, Venezuela, El Salvador, Mexico, Suriname, the Dominican Republic, Colombia, Guatemala and Paraguay, according to public health officials.
Brazilian authorities in November 2014 linked Zika to a surge in babies born with microcephaly, a birth defect that seriously limits a child's mental and physical abilities.
Between 3 and 12 days after being bitten by a mosquito carrying the virus, three out of four people come down with symptoms including mild fever, rash, conjunctivitis, headaches and joint pain.
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