What Is the Zika Virus

As many as 1. 5 million Brazilians may have been infected with the mosquitoborne Zika virus and now the U. S. and other countries are also reporting news cases. But what is the Zika virus And why does it pose a threat to pregnant women Dipti Kapadia explains. Photo: Getty Images Subscribe to the WSJ channel here: More from the Wall Street Journal: Visit Follow WSJ on Facebook: Follow WSJ on Google+: