National Communicable Disease Center. Rubella surveillance, June 1969. Atlanta, GA: National Communicable Disease Center; 1969. 7.
Reference to “Rubella surveillance, June 1969,” from the National Communicable Disease Center, which is now the Centers for Disease Control and Prevention (CDC), does not constitute endorsement or recommendation by the U.S. Government, Department of Health and Human Services, or CDC. The material may otherwise be available on the agency website for no charge.