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  • SK's Skyzoster grabs Korean market share from Merck's Zostavax fiercepharma
    March 15, 2018
    As Merck’s shingles shot Zostavax is challenged by GlaxoSmithKline’s Shingrix in the U.S., it's also quickly yielding market share in South Korea to SK Chemicals’ Skyzoster—and Merck is blaming that on SK’s pricing and marketing tactics.
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