Nearly everyone with access to TV, newspapers, or the Internet has seen the word "Zika" in the news this week. And just as many have probably wondered what it is and what it means for them.

World Health Organization director general Margaret Chan said in a briefing Thursday that the virus was "spreading explosively." One WHO scientist predicted that 3 to 4 million infections would occur in the Americas in the next year.

If you haven't been paying attention to the outbreak, now is the time to start. 

Here are some basic facts about Zika, how it could affect you, and what you can do to keep yourself safe.