title: The success of varicella vaccine.
mesh_terms: D002644:Chickenpox / Q000276:immunology / Q000517:prevention & control*; D002648:Child; D006801:Humans; D007121:Immunocompetence; D007938:Leukemia / Q000150:complications; D014765:Viral Vaccines / Q000627:therapeutic use*
chemical_list: D014765:Viral Vaccines