The Zika Virus transitioned from a rare and relatively mild tropical illness to a full-blown global health crisis in the span of approximately one year. Now active in more than 60 countries, Zika is an epidemic unlike any in history: a virus spread by both mosquitos and sex, and one whose most significant effect -- congenital birth defects -- might not be revealed until months after infection. Zika: What Everyone Needs to Know¿ offers both a summary of the virus'' history to date and an expert overview of what''s known -- and unknown -- about its medical impacts. Written in clear language and in a highly navigable question-and-answer format, this book offers expert answers to the most common and difficult questions surrounding this new global threat:¿ Where did Zika come from?¿ Where is Zika likely to migrate geographically?¿ What are the risks associated with travel and sex in Zika-affected areas?¿ Does Zika cause birth defects in all pregnant hosts? ¿ Do some people''s medical histor