To avoid transplacental infection followed by congenital defects, which series of serologic tests is often performed during pregnancy?

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TORCH is an acronym for Toxoplasma, rubella, cytomegalovirus, and herpes simplex virus. Testing for these agents, and other viral etiologies of infection in newborns, is appropriate during pregnancy, because transplacental infection followed by congenital defects can occur, and postnatally because some congenital disease of newborns can be treated to prevent serious, permanent damage to the infant.

To Avoid Transplacental Infection Followed by Congenital Defects, Which Series