What Is the Zika Virus? Your Questions Answered

By Maggie Fox

The World Health Organization meets next week to decide whether to declare Zika a global emergency.

The virus is spreading fast across the Americas, and WHO expects 3-4 million people to be infected over the next year. Scientists are urgently looking into whether the virus causes birth defects. "We know many people are concerned or scared," says Dr. Anne Schuchat of the U.S. Centers for Disease Control and Prevention.

Here are some answers to questions many are asking: 

How worried should I be?

It depends on where you live. For most U.S. residents, Zika is unlikely to be a problem. That's because it take two factors for the virus to spread: actively infected people and the right kind of mosquitoes to spread it.

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Source: NBC News