Risk of rubella to fetus is maximum, if the mother is infected in:
Risk of rubella to fetus is maximum, if the mother is infected in 6-12 weeks. Timing of fetal infection determines the extent of teratogenic effect in fetus Ist 2 months Abnormalities in 65-85% cases, Multiple congenital defects (cataracts, deafness and hea defects) Spontaneous aboion 3rd month of fetal life: 30% to 35% chance of developing a single defect, Deafness ,CHD. During the 4th month 10% risk for a single congenital defect Beyond the 4th month No risk to fetus
6-12 weeks
20-24 weeks
24-28 weeks
32-36 weeks
Virology (RNA Virus Pa-1,2 & Miscellaneous Viruses)