FluTrack

State respiratory report

Montana flu, RSV & COVID-19 activity

A plain-English respiratory threat level for Montana, built from public-domain CDC surveillance data and refreshed weekly.

FluTrack blends four public CDC surveillance signals for Montana — emergency-department visits, the Acute Respiratory Illness activity level, wastewater viral activity and laboratory test positivity — into the single, plain-English threat level shown here, refreshed every week. You can also compare other states in the same HHS surveillance region, such as Colorado, North Dakota, South Dakota and Utah.

Respiratory threat level · Montana

Sample data

Low

Combined flu, RSV and COVID-19 activity is low and holding steady. · as of Jul 11, 2026

Holding steady Flu · RSV · COVID-19 combined
30 activity index / 100

Respiratory activity in Montana is currently Low, a composite score of 30 out of 100. Week over week it is holding steady. COVID is the largest contributor at Moderate, with RSV at Minimal and Flu at Minimal. In the most recent reporting week, 3.8% of emergency-department visits were for respiratory illness, wastewater viral activity measured 3.7 and test positivity was 9.6%. This reading is based on all four CDC signals — ARI activity level, emergency-department visits, wastewater viral activity and laboratory test positivity.

What we can verify for Montana

Source coverage
4 of 4 CDC signals reported: Wastewater viral activity, Acute Respiratory Illness activity level, Emergency-department visits, Laboratory test positivity.
Week over week
Emergency-department visits for respiratory illness went up 0.15 points, from 3.7% to 3.8% of visits.
Last reliable week
Week ending Jul 11, 2026. CDC surveillance for a week typically firms up one to two weeks after it, so more recent days are not yet represented.
Check the source
Montana's own rows in the CDC NSSP dataset ↗ — the emergency-department figures above come from these records.

Wastewater carries the highest weight in this index (0.3) and is present for Montana, so this reading leans on the signal that typically moves five to seven days ahead of clinical reporting. How the index works →

Trends, 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. For general information only — not medical advice.

By virus

How each respiratory virus is contributing in Montana right now.

Influenza (Flu)

Minimal

Holding steady

COVID-19

Moderate

Holding steady

RSV

Minimal

Holding steady

What the data shows

ED visits for respiratory illness
Share of emergency-department visits (NSSP) 3.8%
Wastewater viral activity
CDC NWSS viral activity index (leading indicator) 3.7
Test positivity
Share of lab tests positive (NREVSS) 9.6%

Montana: common questions

How much respiratory illness is going around in Montana right now?

The current combined flu, RSV and COVID-19 threat level for Montana — and whether it is rising, falling or holding steady — is shown at the top of this page. It reflects the CDC's latest public surveillance data and is a directional weekly trend, not a real-time case count.

Where does this Montana data come from?

From the CDC's public-domain surveillance systems — emergency-department visits (NSSP), the Acute Respiratory Illness activity level (NSSP), wastewater viral activity (NWSS) and laboratory test positivity (NREVSS). See our methodology and data sources.

How often is the Montana threat level updated?

Weekly. CDC surveillance systems publish on Fridays, and reported data typically reflects illness from one to two weeks earlier — so FluTrack emphasizes the trend rather than a single day's number.

Is this medical advice?

No. FluTrack is an independent data-visualization utility and is not affiliated with the CDC. The information here is general and is not a substitute for professional medical advice. For guidance about your health, consult a qualified provider.