The Zika virus is a mosquito borne virus now in 23 countries and territories in the Americas .
With the outbreak of the Zika Virus in much of the southern part of the Western Hemisphere, Americans are wondering what the chance is of an outbreak in the .
The Zika Virus - believed to cause brain defects in babies - is spreading explosively across the Americas. Report by Jennifer Cordingley.
The World Health Organization warns that the virus is “spreading explosively” and will likely infect 3 to 4 million people in the Americas this year. » Subscribe to .