The RA 27/3 (human diploid fibroblast) strain of rubella vaccine (Meruvax II by Merck) was licensed; all other strains were discontinued
In 1979, the RA 27/3 (human diploid fibroblast) strain of rubella vaccine (Meruvax II by Merck) was licensed; all other strains were discontinued.
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Source: U.S. National Library of Medicine
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