except for the possible birth defect issue, the Zika virus seems to be much ado about nothing mostly. While it's true that it can cause birth defects, so can having rubella at certain points in a pregnancy. Also, there is talk about a small percentage going on to cause Guillain-Barré syndrome, most people who get Zika don't even know they have it and those that do usually aren't particularly sick.

Also the CDC has this to say about microcephaly:

Microcephaly is a lifelong condition. There is no known cure or standard treatment for microcephaly. Because microcephaly can range from mild to severe, treatment options can range as well. Babies with mild microcephaly often don’t experience any other problems besides small head size. These babies will need routine check-ups to monitor their growth and development.

http://www.cdc.gov/ncbddd/birthdefects/microcephaly.html

So even with microcephaly, not all children who are born with it suffer from any mental impairment. So although it is wise to try to prevent Zika and microcephaly, it's not going to be a big deal for most people.

ZIKA is not the main cause of the birth defects.