Flu Season Arrives Weeks Early as High-Activity States Jump From Two to Seven and the CDC Counts 2.6 Million Illnesses, Putting Employers on Notice Before the Holidays

The U.S. flu season is not waiting for winter. In its latest weekly update on Friday, the Centers for Disease Control and Prevention reported that seven states had high flu activity last week, up from just two the week before, and that more than 3% of doctor’s office visits were for flu-like illness, a level that signals the season is truly underway, the Associated Press reported. For employers heading into the busiest weeks of the retail, travel and year-end calendar, the timing could hardly be worse.

What the Latest CDC Numbers Show

According to CIDRAP’s summary of the CDC’s FluView report, outpatient visits for influenza-like illness reached 3.2%, above the 2.9% national baseline. Flu test positivity rose to 11.3% from 9.1% a week earlier, driven mostly by influenza A. The CDC now estimates at least 2.6 million flu illnesses, 36,000 hospitalizations and 2,100 deaths so far this season, and it recorded two more pediatric deaths this week, bringing that total to five.

Activity is concentrated in the South and West. Flu is in the high or very high category in California, Louisiana, Oregon, South Carolina, Tennessee, Texas and Washington state, and moderate in Colorado, Florida, Hawaii, Idaho, Massachusetts, New Jersey, New Mexico, New York state and Puerto Rico. The AP noted that Louisiana is seeing the worst of it so far.

The early surge did not come out of nowhere. The AP reported that the flu hospitalization rate in mid-October was the highest seen that early in an autumn in more than 15 years, and experts at the Johns Hopkins Bloomberg School of Public Health pointed to nearly 5,000 lab-confirmed flu hospitalizations in the week ending October 17, the highest mid-October rate since the 2010-2011 season.

An H1N1 Variant Is Doing the Damage

This season is being driven by H1N1, not the H3N2 strains that headlined some recent winters. In the CDC’s week 43 surveillance report, 97.7% of subtyped influenza A samples from public health labs were A(H1N1)pdm09, most of them in a subclade called D.3.1.1. The agency said it is seeing more genetic diversity among co-circulating H1N1 viruses than it has before, and that it is too early to say whether that will affect vaccine effectiveness.

Johns Hopkins experts said the variant’s new mutations let it partly escape existing immunity, but that data suggest this year’s vaccine can still recognize it, so the escape is incomplete. Their message was blunt: treat this as a last call to get vaccinated, because shots work best before a season peaks.

Early Does Not Automatically Mean Worse

There is a measured side to the data. The CDC’s preliminary severity assessment still rates the season as low across all age groups, and the agency stressed that “an earlier increase in activity does not necessarily lead to a higher seasonal peak or greater overall severity.” It also said it expects this respiratory season to look much like last year’s. In late October, the CDC’s FluSight forecasts projected that weekly flu hospital admissions for the week ending November 21 could range from 6,900 to 30,100, a wide band that shows how much uncertainty remains.

Flu is also not the only bug in circulation. CIDRAP reported that rhinovirus, enterovirus and adenovirus levels are elevated nationally, COVID-19 wastewater levels are moderate in most of the country, and clinicians are seeing strep, walking pneumonia and whooping cough. Separately, the CDC has counted 5,412 measles cases across 45 states this year, and the national measles death toll has reached 10, ABC News reported.

Why It Matters for Business

Flu is a workforce problem as much as a medical one. Outplacement firm Challenger, Gray & Christmas has noted that earlier CDC estimates put flu-related lost productivity at about $7 billion a year, and during a past severe season it estimated the cost to employers could top $9.4 billion, according to Fox Business. An early start stretches that exposure across more weeks and pulls it straight into the holiday stretch, when retailers, restaurants, airlines, logistics firms and healthcare providers are already running lean.

The regional pattern matters too. Companies with large operations in Texas, California, the Pacific Northwest and the Southeast are seeing the heaviest activity first, which can mean uneven absences across locations and pressure on call centers, warehouses and front-line service teams. Hospitals and clinics in those states face the double hit of rising patient volume and sick staff at the same time.

Practical steps are well known but often left too late: make on-site or covered flu shots easy to get now, remind staff that sick employees should stay home, cross-train for critical roles, and lean on remote work and automation where customer demand cannot wait. The CDC also advises that prescription antivirals work best when started as early as possible, especially for people at higher risk of complications, which argues for policies that let workers see a clinician quickly rather than push through.

The Bottom Line

The 2026-27 flu season has arrived weeks ahead of the usual calendar, led by a shifting H1N1 strain and concentrated in the South and West. Severity is still rated low and an early start does not guarantee a bad winter, but the jump from two to seven high-activity states in a single week is a clear signal. Businesses that move now on vaccination, staffing backup and customer coverage will be in a far better position than those that wait for the December peak.

Edited by Coron @QUE.COM
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