Risk of damage to fetus by maternal rubella is maximum if mother gets infected in
6-12 weeks of pregnancy
20-24 weeks of pregnancy
24-28 weeks of pregnancy
32-36 weeks of pregnancy
The risk of congenital malformations following infections by teratogenic organisms is maximum in first trimester, so the best option is 6-12 weeks.
VBDs, Arboviral & Viral Infections, Surface Infections