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      "statement": "# Szmuness and colleagues: controlled hepatitis-B vaccine efficacy trial\n\nReported a placebo-controlled, randomized, double-blind trial of a plasma-derived, formalin-inactivated hepatitis-B vaccine in 1,083 men at high risk for infection.\n\n## Scientific scope\n\nThe record is the exact 1980 NEJM trial, population, vaccine preparation and follow-up. Recombinant hepatitis-B vaccines, universal immunization programmes, later safety surveillance and hepatitis elimination remain separate.\n\n## Reading status\n\nThis is a source-linked WRS catalogue note. A full explanatory guide and independent scientific reconstruction have not been completed for this entry. Read the identified original work for its complete narrative and arguments.\n\n## People and systems\n\nWolf Szmuness; Cladd E. Stevens; Edward J. Harley; Edith A. Zang; William R. Oleszko; Daniel C. William; Richard Sadovsky; John M. Morrison; Aaron Kellner\n\nThe named authors contributed to this scoped work; individual effort shares and later applications are not assigned by the byline.\n\n\n\n## Original sources\n\n- [PubMed record for controlled hepatitis-B vaccine trial](https://pubmed.ncbi.nlm.nih.gov/6997738/)\n- [Crossref record for hepatitis-B vaccine efficacy trial](https://api.crossref.org/works/10.1056%2FNEJM198010093031501)\n",
      "summary": "Reported a placebo-controlled, randomized, double-blind trial of a plasma-derived, formalin-inactivated hepatitis-B vaccine in 1,083 men at high risk for infection.",
      "title": "Szmuness and colleagues: controlled hepatitis-B vaccine efficacy trial"
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    "title": "Szmuness and colleagues: controlled hepatitis-B vaccine efficacy trial",
    "context": "Vaccinology",
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