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    "title": "Semmelweis: hand disinfection and fewer maternal deaths",
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    "area": "Infection prevention",
    "topic": "Life & medicine",
    "year": 1847,
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      "scientific_review": "NOT_REVIEWED_BY_WRS",
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      "scope": "Semmelweis introduced chlorinated hand disinfection in a maternity clinic and linked the change with a major fall in maternal mortality. The historical intervention helped establish the importance of preventing infection during care. Scope limitation: This was a historical clinical comparison, not a modern randomized trial. This entry uses an institutional historical account; the original ward records and complete team attribution are not included in this record. It does not endorse every historical claim in the commemorative source.",
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      "record_type": "research_note",
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      "scope": {
        "description": "This was a historical clinical comparison, not a modern randomized trial. This entry uses an institutional historical account; the original ward records and complete team attribution are not included in this record. It does not endorse every historical claim in the commemorative source.",
        "domain": "Infection prevention"
      },
      "sources": [
        {
          "citation": "WHO Europe: Semmelweis and global health",
          "url": "https://www.who.int/europe/news/item/19-06-2018-commemorating-the-impact-of-semmelweis-work-on-global-health"
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      "statement": "# Semmelweis: hand disinfection and fewer maternal deaths\n\nSemmelweis introduced chlorinated hand disinfection in a maternity clinic and linked the change with a major fall in maternal mortality. The historical intervention helped establish the importance of preventing infection during care.\n\n## Scientific scope\n\nThis was a historical clinical comparison, not a modern randomized trial. This entry uses an institutional historical account; the original ward records and complete team attribution are not included in this record. It does not endorse every historical claim in the commemorative source.\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\nIgnaz Semmelweis\n\nNamed source contributors; broader team, precursor or trial-group roster remains incomplete.\n\n\n\n## Original sources\n\n- [WHO Europe: Semmelweis and global health](https://www.who.int/europe/news/item/19-06-2018-commemorating-the-impact-of-semmelweis-work-on-global-health)\n",
      "summary": "Semmelweis introduced chlorinated hand disinfection in a maternity clinic and linked the change with a major fall in maternal mortality. The historical intervention helped establish the importance of preventing infection during care.",
      "title": "Semmelweis: hand disinfection and fewer maternal deaths"
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    "id": "semmelweis-hand-hygiene",
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    "title": "Semmelweis: hand disinfection and fewer maternal deaths",
    "context": "Infection prevention",
    "track": "Scoped scientific or research-capability contribution",
    "band": "A",
    "modifier": null,
    "status": "PROVISIONAL_EDITORIAL",
    "assessed_on": "2026-09-14",
    "evidence_cutoff": "2026-09-14",
    "achievement_state": "SUPPORTED_SCOPED_RESULT",
    "what_changed": "Semmelweis introduced chlorinated hand disinfection in a maternity clinic and linked the change with a major fall in maternal mortality. The historical intervention helped establish the importance of preventing infection during care.",
    "scope": "Semmelweis introduced chlorinated hand disinfection in a maternity clinic and linked the change with a major fall in maternal mortality. The historical intervention helped establish the importance of preventing infection during care. Scope limitation: This was a historical clinical comparison, not a modern randomized trial. This entry uses an institutional historical account; the original ward records and complete team attribution are not included in this record. It does not endorse every historical claim in the commemorative source.",
    "evidence_summary": "Assessment uses the catalogue-linked source evidence for the stated contribution. This was a historical clinical comparison, not a modern randomized trial. This entry uses an institutional historical account; the original ward records and complete team attribution are not included in this record. It does not endorse every historical claim in the commemorative source.",
    "references": [
      {
        "title": "WHO Europe: Semmelweis and global health",
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        "locator": "Retained catalogue source evidence; The May 1847 hand-disinfection intervention and reported mortality change only; unrelated historical assertions are not adopted."
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