{
 "standard": "data/supersessions.json — every superseded URL, its successor and the reason. Nothing is deleted; a superseded URL keeps resolving, is demoted in search, marked noindex/follow, canonicalised to its successor, and excluded from current corpus counts.",
 "asOf": "2026-09-01T21:00:00-07:00",
 "records": [
  {
   "url": "/records/hhs-child-screen-use-symposium-2026-09-01/",
   "supersededBy": "/records/hhs-child-screen-use-2026-09-01/",
   "subject": "HHS Live Real Life symposium on children’s screen use",
   "reason": "Duplicate record for the same event created in two build passes on 1 September 2026. The successor carries the establishes / does-not-establish structure.",
   "on": "2026-09-01"
  },
  {
   "url": "/records/nhs-flu-campaign-phase-one-2026-09-01/",
   "supersededBy": "/records/nhs-england-flu-campaign-2026-09-01/",
   "subject": "NHS England 2026 flu campaign, phase one",
   "reason": "Duplicate record for the same event created in two build passes on 1 September 2026. The successor carries the establishes / does-not-establish structure.",
   "on": "2026-09-01"
  },
  {
   "url": "/records/tga-respiratory-device-foam-list-2026-09-01/",
   "supersededBy": "/records/tga-respiratory-devices-2026-09-01/",
   "subject": "TGA ventilator, CPAP and BiPAP unaffected-device list",
   "reason": "Duplicate record for the same event created in two build passes on 1 September 2026. The successor carries the establishes / does-not-establish structure.",
   "on": "2026-09-01"
  },
  {
   "url": "/records/who-drc-ebola-countermeasure-trials-2026-09-01/",
   "supersededBy": "/records/who-drc-ebola-trials-2026-09-01/",
   "subject": "WHO DRC Ebola response: vaccines and therapeutics in trials",
   "reason": "Duplicate record for the same event created in two build passes on 1 September 2026. The successor carries the establishes / does-not-establish structure.",
   "on": "2026-09-01"
  },
  {
   "url": "/records/who-europe-responsible-ai-health-report-2026-09-01/",
   "supersededBy": "/records/who-europe-responsible-ai-health-2026-09-01/",
   "subject": "WHO/Europe Report of the Knowledge Community on Responsible AI in Health",
   "reason": "Duplicate record for the same event created in two build passes on 1 September 2026. The successor carries the establishes / does-not-establish structure.",
   "on": "2026-09-01"
  }
 ]
}