Congenital cytomegalovirus

Congenital cytomegalovirus is a condition that can occur when an infant is infected with a virus called cytomegalovirus (CMV) before birth. Congenital means the condition is present at birth.

Congenital cytomegalovirus occurs when an infected mother passes CMV to the fetus through the placenta. The mother may not have symptoms, so she may be unaware that she has CMV