Women who acquire clinical evidence of rubella within the first 16 weeks after conception should be aborted. Other susceptible women who are exposed to rubella and who show evidence of having contracted rubella infection on serial serological studies should also be aborted. The risk of fetal damage is significant if either of these conditions occurs.
Allan C. Barnes. Rubella, Abortion, and the Law. Arch Otolaryngol. 1973;98(4):275–276. doi:10.1001/archotol.1973.00780020285012