Zika virus and pregnancy Zika infection during pregnancy can cause a birth defect called microcephaly and other brain problems. Learn how to protect yourself from Zika.
Thalassemia Thalassemia is a hereditary condition where your body produces fewer healthy red blood cells. Learn how thalassemia is diagnosed in your baby.
Pregnancy after age 35 If you get pregnant after 35, you may need prenatal tests to check for birth defects. Learn about pregnancy after 35.