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
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