<unk>  <unk>  can occur in a developing fetus of a pregnant woman who has contracted<unk> , usually in the first trimester. If infection occurs 0–28 days before conception, the infant has a 43% risk of being affected. If the infection occurs 0–12 weeks after conception, the risk increases to 81%. If the infection occurs 13–26 weeks after conception, the risk is 54% of the infant being affected by the disease. Infants are not generally affected if<unk>  is contracted during the third trimester, or 26–40 weeks after conception. Problems rarely occur when<unk>  is contracted by the mother after 20 weeks of gestation and continues to disseminate the virus after birth. It was discovered in 1941 by Australian Norman McAlister Gregg.
Congenital rubella syndrome
Congenital malaria
Neonatal meningitis
Neonatal hepatitis
Congenital cytomegalovirus infection
Congenital syphilis
Neonatal tetanus
Neonatal herpes simplex