Zika Virus Rumors and Theories That You Should Doubt
By DONALD G. McNEIL Jr., February 19, 2016
New York Times


Although there is no absolute proof that the Zika virus is behind the surge in microcephaly in Brazil and outbreaks of Guillain-Barré syndrome in six countries, the world's leading health authorities are close to certain that it is.

"With each passing day, the evidence that it is the cause mounts," Dr. Thomas R. Frieden, director of the Centers for Disease Control and Prevention, said recently.

Dr. Bruce Aylward, who is leading the World Health Organization's response, said on Friday: "At this time, the virus is considered guilty until proven innocent."....

Entomologists have dismissed as "ridiculous" the idea that the larvicide pyriproxyfen could have caused such a large wave of birth defects. It does not attack nerve cells; it is a chemical mimic of an insect hormone that signals larvae to stop growing, and insect hormones do not endanger humans.

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