Classroom Questions Questions for ‘Zika birth defects: Concerns spread from head to toe’ A female Aedes aegypti mosquito finishes a blood meal. Mosquitoes can become infected with Zika when they feed on blood containing the virus. Once infected, they can spread the virus to other people. Prof. Frank Hadley Collins/CDC/(CC0 1.0) Share this:FacebookTwitterRedditGoogle ClassroomEmailPrint By Science News for Students November 15, 2016 at 2:36 pm Classroom questions are available for free with registration. Learn more Register to access: Client key* E-mail* Log in Already Registered? Enter your e-mail address above.