<prompt> All of the following isare true about Rubella in pregnancy exceptDiagnosed when IgM antibodies are present in the neonatal serumDiagnosed when IgG antibodies persist for more than 6 monthsMost common defects are cataracts, deafness and hea defectsMaternal infection after 16 weeks of gestation result in major congenital defects  <response>: Maternal infection after 16 weeks of gestation result in major congenital defects is not true. 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 The classic triad of congenital Rubella includes - Deafness Cataract Congenital hea disease PDA and PS 