Merck (MRK) receives FDA approval to revise the biologics labeling on both the...

|About: Merck & Co Inc. (MRK)|By:, SA News Editor

Merck (MRK) receives FDA approval to revise the biologics labeling on both the refrigerator-stable and frozen formulations of it's Chicken pox vaccine Varivax Details of the revised labeling aren't currently available.