{
  "purpose": "recalculation of published aggregate rows and explicit ascertainment illustration; not causal effects",
  "beijing": {
    "under5_pre_PCR": {
      "period": 0,
      "label": "疫情前",
      "measure": "PCR",
      "age": "<5岁",
      "positive": 292,
      "tested": 5293,
      "percent": 5.516720196485925,
      "lo95": 4.93330170795915,
      "hi95": 6.164660415143041
    },
    "under5_2022_23_PCR": {
      "period": 4,
      "label": "2022–23",
      "measure": "PCR",
      "age": "<5岁",
      "positive": 42,
      "tested": 556,
      "percent": 7.553956834532374,
      "lo95": 5.636911524249758,
      "hi95": 10.053505367298813
    },
    "pre_2017_19_under5_IgG": {
      "period": 0,
      "label": "疫情前",
      "measure": "IgG",
      "age": "<5岁",
      "positive": 33,
      "tested": 253,
      "percent": 13.043478260869565,
      "lo95": 9.440565926446334,
      "hi95": 17.751873775997403
    },
    "season_2022_23_under5_IgG": {
      "period": 4,
      "label": "2022–23",
      "measure": "IgG",
      "age": "<5岁",
      "positive": 4,
      "tested": 119,
      "percent": 3.361344537815126,
      "lo95": 1.3147752896700837,
      "hi95": 8.32485202701503
    },
    "note": "Table 1 age-specific positives do not sum to reported overall positives in some columns (e.g. 578 vs 582 before pandemic); age-row calculations are kept separate and no missing cases invented."
  },
  "national": {
    "report_date": "2026-09-03",
    "week": 35,
    "start": "2026-08-24",
    "end": "2026-08-30",
    "rows": [
      {
        "pathogen": "新型冠状病毒",
        "outpatient_ILI_percent": 15.8,
        "inpatient_SARI_percent": 6.8
      },
      {
        "pathogen": "流感病毒",
        "outpatient_ILI_percent": 17.7,
        "inpatient_SARI_percent": 7.2
      },
      {
        "pathogen": "呼吸道合胞病毒",
        "outpatient_ILI_percent": 1.4,
        "inpatient_SARI_percent": 2.1
      },
      {
        "pathogen": "腺病毒",
        "outpatient_ILI_percent": 1.1,
        "inpatient_SARI_percent": 1.0
      },
      {
        "pathogen": "人偏肺病毒",
        "outpatient_ILI_percent": 2.6,
        "inpatient_SARI_percent": 3.6
      },
      {
        "pathogen": "副流感病毒",
        "outpatient_ILI_percent": 2.1,
        "inpatient_SARI_percent": 1.5
      },
      {
        "pathogen": "普通冠状病毒",
        "outpatient_ILI_percent": 0.5,
        "inpatient_SARI_percent": 0.1
      },
      {
        "pathogen": "博卡病毒",
        "outpatient_ILI_percent": 1.4,
        "inpatient_SARI_percent": 1.5
      },
      {
        "pathogen": "鼻病毒",
        "outpatient_ILI_percent": 2.8,
        "inpatient_SARI_percent": 2.7
      },
      {
        "pathogen": "肠道病毒",
        "outpatient_ILI_percent": 2.4,
        "inpatient_SARI_percent": 1.3
      },
      {
        "pathogen": "肺炎支原体",
        "outpatient_ILI_percent": 0.5,
        "inpatient_SARI_percent": 2.4
      }
    ]
  },
  "toy": {
    "true_infections_each_group": [
      100.0,
      100.0
    ],
    "probabilities_before": [
      0.8,
      0.1
    ],
    "probabilities_after": [
      0.8,
      0.5
    ],
    "observed_before_after": [
      [
        80.0,
        10.0
      ],
      [
        80.0,
        50.0
      ]
    ],
    "older_share_before_after": [
      0.1111111111111111,
      0.38461538461538464
    ]
  },
  "limits": [
    "Wilson intervals describe conditional sample proportions, not population incidence or causal uncertainty.",
    "Unequal surveillance windows and sampling frames are explicitly retained.",
    "No raw patient data, causal attribution model or author serology posterior was re-fitted."
  ]
}