The Zika virus is easily spread, and will spread throughout the United States and many other countries this summer and spring; might greatly effect the Summer Olympics

Why is the Zika virus the greatest challenge the US faces with regard to international issues and why?

When a pregnant woman is bitten by a mosquito that is carrying the Zika virus, it can cause the birth defect of Microephaly.

This will affect traveling around hot climates, especially this summer while many people all around the world will be exploring and going on vacations.