When a mother contracts rubella early in the pregnancy, the most common consequence to the embryo is deafness.

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Rubella (German measles) is known to cause congenital rubella syndrome (CRS) when contracted by a pregnant woman in the early stages of pregnancy. CRS can result in a range of birth defects, including deafness, cataracts, heart defects, and cognitive impairment, among others. Deafness is the most common consequence of CRS caused by rubella.

When a Mother Contracts Rubella Early in the Pregnancy, the Most