Zika may not be the only virus of its kind that can damage a fetus
Tests on pregnant mice show two other flaviviruses also cause deadly harm in the womb
![West Nile virus](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2018/01/013018_AC_flavivirus_feat.jpg?fit=860%2C460&ssl=1)
ALL IN THE FAMILY West Nile virus (green) grows in a lab sample of human placental tissue in this micrograph. Like Zika, West Nile can harm a fetus, tests in mice show.
Nitin Arora and Carolyn Coyne/University of Pittsburgh