It is not known whether the risks of getting infected with Zika while you're pregnant are higher in one trimester of pregnancy than others. Scientists who are looking at children with microcephaly believe that earlier stages of pregnancy—earlier trimesters—are probably riskier than later trimesters, but it is not known for sure.
If you are pregnant and your partner has traveled to an area with Zika virus, guidance from the Centers for Disease Control and Prevention (CDC) is that you either abstain or practice absolutely safe sex for the duration of the pregnancy, because it is simply not known for sure what is the riskiest stage.
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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.