Despite the world's best efforts, Zika is mysterious. There's a lot we still don't know about it, with even some big things still unconfirmed. Worse still, a cottage industry of Zika conspiracy-theory websites have been created over the past few months, quickly spreading inaccurate information.
The quiz below is designed to help you test your knowledge of Zika and separate facts from rumors and misinformation.
More on Zika