Yes, microcephaly in newborn babies in newborn babies seems to be really associated with this virus (a baby’s developing brain doesn’t grow properly which can cause development, neurological and learning problems). I would not hesitate to use insect repellent liberally if I was traveling to these areas. I am telling child bearing women to use 2 forms of birth control or better yet avoid sexual contact completely if they have have to travel to an affected area, including the Caribbean, during their stay and for several weeks after they return home as if infected the virus can be in the body for a few weeks upon return to a non-Zika area (Studies will be looking to define this period of time after the first day of infection). In addition, the virus appears transmission by sexual contact. Women of child bearing age should avoid sexual contact with anyone returning from an infected area until they are proven to not have the infection. The CDC has developed an exceptionally good link for Zika virus information.
Information on protecting yourself from Zika virus: