In infections with coxsackie echoviruses in the first and second trimesters: Only exceptionally have fetal malformations (CNS, cardiovascular, gastroenteral, urogenital) been described. Abortion or intrauterine fetal death may occasionally occur in highly febrile conditions. The risk of fetal harm at birth is within the range of the so-called normal risk of +/- 3.5%. There is no evidence for an association of maternal enterovirus infection and fetal/child malformations or developmental disorders.
Maternal infection towards the end of the third trimester: Neonates of mothers with acute infection shortly before delivery may present with severe neonatal illness: sepsis, meningoencephalitis, myocarditis, hepatitis, coagulopathy.
The course of disease is usually severe in intrauterine transmitted infections, less severe in early postpartum infection (e.g. by contact with visitors or in neonatal wards).
STAR complex: recurrent arthritides for months , febrile episodes, sore throat and a maculo-papular exanthema.