FluTrack

State respiratory report

New Hampshire flu, RSV & COVID-19 activity

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

FluTrack blends four public CDC surveillance signals for New Hampshire — emergency-department visits, wastewater viral activity, laboratory test positivity, and the Acute Respiratory Illness (ARI) activity level — into the single, plain-English threat level shown here, refreshed every week. You can also compare nearby states such as Connecticut, Maine, Massachusetts and Rhode Island.

Respiratory threat level · New Hampshire

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
28 activity index / 100

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 New Hampshire right now.

Influenza (Flu)

Minimal

Holding steady

COVID-19

Low

Holding steady

RSV

Minimal

Holding steady

What the data shows

ED visits for respiratory illness
Share of emergency-department visits (NSSP) 3.2%
Wastewater viral activity
CDC NWSS viral activity index (leading indicator) 3.4
Test positivity
Share of lab tests positive (NREVSS) 9.3%

New Hampshire: common questions

How much respiratory illness is going around in New Hampshire right now?

The current combined flu, RSV and COVID-19 threat level for New Hampshire — 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 New Hampshire data come from?

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

How often is the New Hampshire 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.