Combined respiratory indexSouth Dakota
Reported CDC dataMinimal
Rising +50% in the share of emergency-department visits vs prior-observation mean
Minimal
0
FluRSVCOVID-19combined
South Dakota
Minimal
0
Rising +50% in the share of emergency-department visits vs prior-observation mean
Respiratory observations in South Dakota: flu, RSV & COVID-19
A combined respiratory index and separate influenza, RSV and COVID-19 readings from available public-domain CDC surveillance observations. Read the period and provenance before interpreting a level or trend.
This combined respiratory index uses the contributing readings for the Acute Respiratory Illness activity rating (NSSP) and emergency-department visit percentages (NSSP). Laboratory positivity has no live adapter and does not contribute to this live reading. Each metric retains its own observation period and availability; a download date does not describe health conditions on that day. You can also compare regional states such as Colorado, Montana, North Dakota and Utah.
How to read the South Dakota observations
- For observations ending Oct 10, 2026, the FluTrack combined respiratory index for South Dakota was Minimal. It summarizes the available surveillance inputs; pathogen-specific readings may be missing. It is not a case count or an influenza-only level.
- The trend in the share of emergency-department visits was rising (+50%): latest observation compared with the mean of up to three prior observations. This comparison describes that measurement, not a percentage change in the combined index.
- Highest available pathogen index: Flu, COVID-19 and RSV (Minimal). Pathogen indices use different measurement thresholds; this does not identify the most infections or the largest contribution to the combined index.
- Largest relative increase among available series for the share of emergency-department visits with the same comparison observations: Flu, +80%; latest observation compared with the mean of up to three prior observations. Rankings use the actual uncapped comparisons. Missing, insufficient and zero-baseline series are not ranked.
Dated observations, not real-time counts
Surveillance data is reported with an inherent lag of roughly one to two weeks. FluTrack shows directional trends, not a real-time case count. The trend compares the latest observation with the mean of up to three prior observations of the same measurement. A build or retrieval date does not establish health conditions on that day. Missing data does not mean no illness. For general information only — not medical advice.
Reported observations in South Dakota, in plain English
Week ending Oct 10, 2026 · what the contributing CDC surveillance observations show; not current-day conditions.
- Overall: The combined respiratory index for South Dakota is minimal for the reported observation period. The share of emergency-department visits was edging up compared with the mean of up to three prior observations. CDC reported the state's broader acute respiratory illness activity as Low.
- Flu: Influenza accounted for 0.3% of emergency-department visits in the reported period. FluTrack's influenza index was minimal. The share of emergency-department visits was edging up compared with the mean of up to three prior observations.
- Emergency visits: Flu accounted for the largest share of visits among these three viruses in South Dakota’s reporting emergency departments (0.3%, against 0.2% COVID-19 and 0.0% RSV) for the reported period. This is not a population case count.
- Wastewater: No contributing wastewater reading is available for South Dakota in the reported period, so this index rests on CDC’s acute respiratory illness rating and emergency-department visits.
- Nearby states: South Dakota is tied for the lowest available index level among the 5 other states with usable readings for the same observation period in South Dakota’s HHS region — 1 of 5 compared states is higher.
By virus
Separate pathogen indices for the dated observations in South Dakota. Missing readings do not mean no illness.
Influenza (Flu)
Minimal
0
Rising +80% in the share of emergency-department visits vs prior-observation meanContributing inputs: ED-visit share. Observation week ending Oct 10, 2026.
COVID-19
Minimal
0
Rising +20% in the share of emergency-department visits vs prior-observation meanContributing inputs: ED-visit share. Observation week ending Oct 10, 2026.
RSV
Minimal
0
Holding steady (unchanged from zero; percentage change is undefined) in the share of emergency-department visits vs prior-observation meanContributing inputs: ED-visit share. Observation week ending Oct 10, 2026.
CDC epidemic trend for COVID-19 in South Dakota
Not shown for South Dakota
CDC publishes an epidemic-trend category for South Dakota, but FluTrack is not displaying it. CDC estimates this trend from emergency-department visit data. CDC’s respiratory data page says no emergency-department visit data are available for South Dakota. Source: CDC. Without those observations in view, the direction label cannot be placed beside the data it rests on. This is a gap in the data, not evidence that COVID-19 is rising, falling or low.
What the data shows
Acute respiratory illness activity
CDC NSSP activity category; broader than the three-virus index · Observation week ending Oct 10, 2026 · Publication date not provided by this feed · Retrieved 2026-10-19T06:11:25.301ZLow
CDC NSSP activity category; broader than the three-virus index · Observation week ending Oct 10, 2026 · Publication date not provided by this feed · Retrieved 2026-10-19T06:11:25.301ZLow
Combined flu, RSV and COVID-19 ED visits
Share of emergency-department visits; not a case count (NSSP) · Observation week ending Oct 10, 2026 · Publication date not provided by this feed · Retrieved 2026-10-19T06:11:21.548Z0.5%
Share of emergency-department visits; not a case count (NSSP) · Observation week ending Oct 10, 2026 · Publication date not provided by this feed · Retrieved 2026-10-19T06:11:21.548Z0.5%
Laboratory test positivity is unavailable from the implemented live adapter and does not contribute to this reading.
Source periods and coverage
Source update, publication and retrieval dates do not replace the observation period. “Not supplied” is an unresolved metadata gap. Cache age is separate from observation age.
| Measurement | Availability | Observation period | Publication | Upstream update | Retrieved | Coverage |
|---|---|---|---|---|---|---|
| emergency-department visit percentages (NSSP) | available · contributes | Ending Oct 10, 2026 | Not supplied | Not supplied | 2026-10-19T06:11:21.548Z · warm copy past cache TTL; app request 2026-10-19T16:48:01.292Z | 3/3 pathogen ED readings; population coverage not supplied |
| wastewater viral activity (NWSS) | missing · does not contribute | Ending Oct 3, 2026 | Not supplied | 2026-10-16 11:00 | 2026-10-19T06:11:28.739Z · warm copy past cache TTL; app request 2026-10-19T16:48:01.292Z | Flu: 0 included sites; 2 eligible sites; minimum 3; COVID-19: 2 included sites; 2 eligible sites; minimum 3; RSV: 0 included sites; 2 eligible sites; minimum 3; population coverage not supplied |
| the Acute Respiratory Illness activity rating (NSSP) | available · contributes | Ending Oct 10, 2026 | Not supplied | 2026-10-16 16:01:56.318944 | 2026-10-19T06:11:25.301Z · warm copy past cache TTL; app request 2026-10-19T16:48:01.292Z | 1 usable observations; population coverage not supplied |
| laboratory test positivity | unavailable · does not contribute | Not supplied | Not supplied | Not supplied | Not supplied | Not supplied; population coverage not supplied |
HHS regional states
South Dakota: common questions
What does the South Dakota respiratory index show?
For observations ending Oct 10, 2026, the FluTrack combined respiratory index for South Dakota was Minimal. It summarizes the available surveillance inputs; pathogen-specific readings may be missing. It is not a case count or an influenza-only level.
How is the South Dakota trend compared?
The trend compares the latest available observation with the mean of up to three prior observations of the same measurement. With one prior observation it is a two-observation comparison; with more it is not an ordinary week-over-week change. Insufficient history is unknown, not stable. A zero prior mean has no defined percentage change and is excluded from relative-growth rankings. Capped percentages are labeled and distinguished from the actual comparison. The measurement and dates are shown with the reading.
Where does this South Dakota data come from?
This combined respiratory index uses the contributing readings for the Acute Respiratory Illness activity rating (NSSP) and emergency-department visit percentages (NSSP). Laboratory positivity has no live adapter and does not contribute to this live reading. Each metric retains its own observation period and availability; a download date does not describe health conditions on that day. See our methodology and data sources.
How current are the South Dakota observations?
The observation period, source update or publication date when supplied, and retrieval time have different meanings. Weekly publication can describe earlier observation periods; delays and revisions vary by surveillance system. A recent build or retrieval does not establish today’s conditions. Missing, stale or sample data cannot establish a current trend.
Is this medical advice?
No. FluTrack is an independent data-visualization utility and is not affiliated with the CDC. It does not diagnose illness or measure personal risk. For guidance about your health, consult a qualified provider.
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