According to the testing algorithm, fetal ultrasonography is indicated to detect microcephaly or intracranial calcifications. If either finding is present, the patient should be tested for infection, and amniocentesis should be considered. If neither finding is present, consider serial ultrasonography to monitor for development of microcephaly or intracranial calcifications.
For more on microcephaly, read here.
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Cite this: Michael Stuart Bronze. Fast Five Quiz: Do You Know the Zika Virus Guidelines? - Medscape - Jan 27, 2016.