I say that if the virus can do that to a developing baby, it is probably not wholly benign to adults, either.
The damage it does to a baby in the womb is a short term effect of the virus. I can't imagine that they have a clue as to the long-term impacts of this virus. Another unknown....does this virus spread to animals that are bitten by infected mosquitoes?
This is beginning to shape up like something right out of Science Fiction.