Most adults are immune to rubella due to previous infection during childhood. Vaccination is effective to preventing rubella infection but rubella vaccination is currently not part of the national expanded program on immunisation schedule in South Africa. The vaccine can be given as MMR (measles, mumps, rubella) vaccine, available in the private and the military health sectors. MMR is usually administered at 12 months and 18 months of age but can be given in adults. The vaccine is not suitable, however, for pregnant women.
https://www.nicd.ac.za/increase-in-rubella-cases-in-the-western-cape-province-17-october-2023/