Datasets:

EPI-Eval
/

nhsn-hrd

---
pretty_name: CDC NHSN Hospital Respiratory Data (HRD)
license: other
size_categories:
- 10K<n<100K
tags:
- cadence-weekly
- geo-us
- surveillance-respiratory
- pathogen-influenza
- pathogen-sars-cov-2
- pathogen-rsv
- tier-1
- availability-open
schema_version: '0.1'
source_id: nhsn-hrd
source_url: https://data.cdc.gov/Public-Health-Surveillance/Weekly-Hospital-Respiratory-Data-HRD-Metrics-by-Ju/ua7e-t2fy/about_data
manifest_section: §1.1
surveillance_category: respiratory
pathogens:
- influenza
- sars-cov-2
- rsv
availability: open
availability_notes: null
access_type: socrata
tier: 1
cadence: weekly
geography_levels:
- national
- subnational-region
- subnational-state
geography_countries:
- US
gold_standard_for:
- flusight-forecast-hub
- covid19-forecast-hub
- rsv-forecast-hub
vintaged_version_of: null
succeeds: hhs-protect
derived_from: []
value_columns:
- name: totalconfflunewadm
  unit: admissions/week
  value_type: incident
  description: New laboratory-confirmed influenza hospital admissions (FluSight target)
  aggregation: sum
- name: totalconfc19newadm
  unit: admissions/week
  value_type: incident
  description: New laboratory-confirmed COVID-19 hospital admissions
  aggregation: sum
- name: totalconfrsvnewadm
  unit: admissions/week
  value_type: incident
  description: New laboratory-confirmed RSV hospital admissions (mandatory reporting from epiweek 2024-46)
  aggregation: sum
- name: numinptbeds
  unit: beds
  value_type: stock
  description: Total staffed inpatient beds (capacity denominator) — point-in-time
  aggregation: mean
- name: numinptbedsocc
  unit: beds
  value_type: stock
  description: Staffed inpatient beds occupied — point-in-time
  aggregation: mean
- name: numicubeds
  unit: beds
  value_type: stock
  description: Total ICU beds — point-in-time
  aggregation: mean
- name: numicubedsocc
  unit: beds
  value_type: stock
  description: ICU beds occupied — point-in-time
  aggregation: mean
- name: totalconfc19icupats
  unit: patients
  value_type: stock
  description: Confirmed COVID-19 patients in ICU — point-in-time
  aggregation: mean
- name: totalconffluicupats
  unit: patients
  value_type: stock
  description: Confirmed influenza patients in ICU — point-in-time
  aggregation: mean
- name: totalconfflunewadmper100k
  unit: admissions/week per 100k population
  value_type: rate
  description: Weekly flu admission rate per 100k population
  aggregation: rate
- name: totalconfc19newadmper100k
  unit: admissions/week per 100k population
  value_type: rate
  description: Weekly COVID-19 admission rate per 100k population
  aggregation: rate
- name: totalconfflunewadmcumulativeseasonalsum
  unit: admissions
  value_type: cumulative
  description: Cumulative flu admissions since start of respiratory season
  aggregation: max
- name: totalconfc19newadmcumulativeseasonalsum
  unit: admissions
  value_type: cumulative
  description: Cumulative COVID-19 admissions since start of respiratory season
  aggregation: max
- name: totalconfrsvnewadmcumulativeseasonalsum
  unit: admissions
  value_type: cumulative
  description: Cumulative RSV admissions since start of respiratory season
  aggregation: max
notes:
  extra_columns:
  - column: location_name
    description: 2-letter postal abbreviation as reported by the source. Kept for traceability; `location_id` is canonical.
  - column: respseason
    description: Respiratory season identifier (e.g. '2024-2025'). NHSN-specific; useful for grouping by season but doesn't
      appear in other sources.
  interpretation_caveats:
  - column: numinptbeds
    caveat: Counts only *staffed* beds (those with available staff to operate). HHS Protect's analogous capacity column had
      different inclusion criteria; do not naively splice across the 2024-11 boundary.
  - column: totalconfflunewadm
    caveat: Counts new admissions where flu was confirmed by lab on or within 14 days of admission. Reporting jurisdictions
      varied this rule pre-2024-11; treat pre-2024-11 values as approximate.
  - column: totalconfrsvnewadm
    caveat: RSV mandatory reporting started epiweek 2024-46; pre-2024-46 values are NaN or sparsely populated by voluntary
      reporters.
  - column: '*cumulativeseasonalsum'
    caveat: 'Cumulative within a respiratory season (resets at season boundary). Use with `value_type: cumulative` discipline
      — never sum, diff to recover incident.'
  general: 'NHSN HRD is the FluSight scoring target from the 2024–25 season onward. The feed includes

    backfilled HHS Protect data going back to 2020-08, but the underlying reporting program

    changed in 2024-11 (voluntary → mandatory). For long-term modeling that crosses that boundary,

    treat pre-2024-11 and post-2024-11 as having different observational regimes.


    Hospital reporting became voluntary 2024-05-01 to 2024-11-09; mandatory reporting resumed

    under NHSN HRD starting epiweek 2024-46. The voluntary period has reduced coverage.

    '
extra:
  case_definition_url: https://www.cdc.gov/nhsn/psc/respiratory-data.html
  source_columns_omitted: 199 of 213 source columns omitted (mostly adult/ped breakdowns, percentage-change variants, and
    per-hospital-reporter normalizations). Available on the source endpoint if needed.
  flusight_target_column: totalconfflunewadm
computed:
  last_ingested: '2026-04-25T22:38:34Z'
  row_count: 19966
  time_coverage:
  - start: '2020-08-08'
    end: '2026-04-18'
  geography_unit_count: 67
  observed_cadence_days: 7
  missing_gaps: []
  data_hash: 5babe542cebfb216
---

# CDC NHSN Hospital Respiratory Data (HRD)

NHSN HRD is the FluSight scoring target from the 2024–25 season onward. The feed includes
backfilled HHS Protect data going back to 2020-08, but the underlying reporting program
changed in 2024-11 (voluntary → mandatory). For long-term modeling that crosses that boundary,
treat pre-2024-11 and post-2024-11 as having different observational regimes.

Hospital reporting became voluntary 2024-05-01 to 2024-11-09; mandatory reporting resumed
under NHSN HRD starting epiweek 2024-46. The voluntary period has reduced coverage.

**Source:** <https://data.cdc.gov/Public-Health-Surveillance/Weekly-Hospital-Respiratory-Data-HRD-Metrics-by-Ju/ua7e-t2fy/about_data>

## Coverage

- **Time:** 2020-08-08 → 2026-04-18
- **Cadence:** `weekly` (observed median spacing: 7 days)
- **Geography levels:** `national`, `subnational-region`, `subnational-state` — 67 unique location IDs
- **Countries:** US
- **Pathogens:** `influenza`, `sars-cov-2`, `rsv`
- **Surveillance category:** `respiratory`
- **Rows:** 19,966

## Columns

| Column | Unit | value_type | Aggregation | Description |
|--------|------|------------|-------------|-------------|
| `totalconfflunewadm` | admissions/week | `incident` | `sum` | New laboratory-confirmed influenza hospital admissions (FluSight target) |
| `totalconfc19newadm` | admissions/week | `incident` | `sum` | New laboratory-confirmed COVID-19 hospital admissions |
| `totalconfrsvnewadm` | admissions/week | `incident` | `sum` | New laboratory-confirmed RSV hospital admissions (mandatory reporting from epiweek 2024-46) |
| `numinptbeds` | beds | `stock` | `mean` | Total staffed inpatient beds (capacity denominator) — point-in-time |
| `numinptbedsocc` | beds | `stock` | `mean` | Staffed inpatient beds occupied — point-in-time |
| `numicubeds` | beds | `stock` | `mean` | Total ICU beds — point-in-time |
| `numicubedsocc` | beds | `stock` | `mean` | ICU beds occupied — point-in-time |
| `totalconfc19icupats` | patients | `stock` | `mean` | Confirmed COVID-19 patients in ICU — point-in-time |
| `totalconffluicupats` | patients | `stock` | `mean` | Confirmed influenza patients in ICU — point-in-time |
| `totalconfflunewadmper100k` | admissions/week per 100k population | `rate` | `rate` | Weekly flu admission rate per 100k population |
| `totalconfc19newadmper100k` | admissions/week per 100k population | `rate` | `rate` | Weekly COVID-19 admission rate per 100k population |
| `totalconfflunewadmcumulativeseasonalsum` | admissions | `cumulative` | `max` | Cumulative flu admissions since start of respiratory season |
| `totalconfc19newadmcumulativeseasonalsum` | admissions | `cumulative` | `max` | Cumulative COVID-19 admissions since start of respiratory season |
| `totalconfrsvnewadmcumulativeseasonalsum` | admissions | `cumulative` | `max` | Cumulative RSV admissions since start of respiratory season |

### Additional data columns

- **`location_name`** — 2-letter postal abbreviation as reported by the source. Kept for traceability; `location_id` is canonical.
- **`respseason`** — Respiratory season identifier (e.g. '2024-2025'). NHSN-specific; useful for grouping by season but doesn't appear in other sources.

## Interpretation caveats

Things that may differ from how other sources define a similar measure. If you're combining this dataset with another, read these first.

- **`numinptbeds`** — Counts only *staffed* beds (those with available staff to operate). HHS Protect's analogous capacity column had different inclusion criteria; do not naively splice across the 2024-11 boundary.
- **`totalconfflunewadm`** — Counts new admissions where flu was confirmed by lab on or within 14 days of admission. Reporting jurisdictions varied this rule pre-2024-11; treat pre-2024-11 values as approximate.
- **`totalconfrsvnewadm`** — RSV mandatory reporting started epiweek 2024-46; pre-2024-46 values are NaN or sparsely populated by voluntary reporters.
- **`*cumulativeseasonalsum`** — Cumulative within a respiratory season (resets at season boundary). Use with `value_type: cumulative` discipline — never sum, diff to recover incident.

## Related datasets in EPI-Eval

- **Gold standard for:** `flusight-forecast-hub`, `covid19-forecast-hub`, `rsv-forecast-hub`
- **Succeeds:** `hhs-protect` (different reporting program; do not splice rows directly without normalization)

## Access

- **Availability:** `open`
- **Access type:** `socrata`
- **License:** other
- **Tier:** 1

---

*Schema version `0.1` · Last ingested 2026-04-25T22:38:34Z · `source_id: nhsn-hrd` · Manifest section §1.1*