put it at risk of spontaneous abortion or premature birth. http://www.historyofvaccines.org/content/articles/rubella The History of Vaccines - Rubella The History of Vaccines - Rubella put it at risk of spontaneous abortion or premature birth. put it at risk of spontaneous abortion or premature birth. "Rubella — History of Vaccines" http://www.historyofvaccines.org/content/articles/rubella