Viruses can have significant implications for pregnancy. HPV infections can complicate childbirth if genital warts are present. HSV can be transmitted to the baby during delivery, leading to neonatal herpes. HIV-positive mothers can transmit the virus to their babies during pregnancy, childbirth, or breastfeeding, though ART can significantly reduce this risk. Hepatitis B and C can also be transmitted to the baby, and infected mothers may need specialized care during pregnancy.