Women infected with Zika early in pregnancy are giving birth to babies with a condition called "microcephaly" (small head) that results in severe developmental delay and early death. If you are or could be pregnant, it is highly inadvisable to travel to one of these countries at this time.
Women considering getting pregnant should consult their doctor if planning to travel. All travelers should take precautions to avoid mosquito bites.
Marcus Thygeson, M.D., M.P.H., is senior vice president and chief health officer at Blue Shield of California
Editor's Note: This post was first published on our internal blog, but we felt we should share it externally given the implications for our members. - SB