Chickenpox vaccine gets approval in US.
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D019433:Chickenpox Vaccine; D017277:Drug Approval; D014645:Herpesvirus 3, Human / Q000276:immunology*; D006801:Humans; D014481:United States; D014613:Vaccines, Attenuated; D014765:Viral Vaccines
D019433:Chickenpox Vaccine; D014613:Vaccines, Attenuated; D014765:Viral Vaccines