"Congenital rubella syndrome, a devastating constellation of birth defects, is caused by rubella infection during pregnancy. Since 2012, rubella-containing vaccine (RCV) introduction efforts have accelerated worldwide, and a 2020 global policy update recommended that introduction efforts use a strategy that leads to elimination.
By 2020, 173 (89%) of 194 countries had introduced RCVs, and 93 (48%) had been verified as having eliminated rubella transmission. Vaccination introduction equity improved substantially among lower income countries, but vaccination coverage remains a concern.
To further progress, it is important the 21 remaining countries introduce rubella vaccine and that all countries enhance vaccination coverage and surveillance to achieve and maintain elimination." - Progress Toward Rubella and Congenital Rubella Syndrome Control and Elimination — Worldwide, 2012–2020