She is his intellectual equal.
Even the bird flu of the early 1900s had less mystery than this virus. The bird flu if it happened today would have victims, but, it would be contained and have a limited effect on people. The Zika virus posses a threat to human beings throughout the world at the genetic level. That is unheard of.
Sometimes viruses have been known to effect fetuses, but, it is usually due to high fevers or other aspects of the illness of the mother that indirectly effects the fetus, but, this virus directly attacks the fetus. I can't help believe it can harbor inertly in the mother or more realistically effects the genetic structure of the ovum and/or sperm itself.
To think there would be a biochemical response to pregnancy that would wake up the virus is not realistic. I think it is possible in a world of possibilities, but, it isn't likely. The likely scenario is that one parent or both are genetically altered when first infected with the virus and survive the symptoms. It is the feasible scenario. This virus is a strange one and it is very threatening to the life of real people and potentially altering a generation of people.