Illinois Sees Worst Flu Season in Years as Vaccine Skepticism Grows

Peak flu season hits as January fatalities rise rapidly, with experts citing distrust in vaccines as a key factor.

Jan. 27, 2026 at 11:23pm

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Illinois is experiencing a severe flu season with outbreak zones popping up across the state. Peak flu season comes in February as January fatalities increase at a rapid rate to at least 100. One cause for the high rate of cases, experts believe, is people distrusting vaccines and avoiding the flu vaccine altogether due to political pressure.

Why it matters

The severe flu outbreak in Illinois highlights growing concerns about vaccine hesitancy and its impact on public health, especially as flu season reaches its peak. Declining vaccination rates have contributed to the state's worst flu season in over 15 years, putting vulnerable populations like children and the elderly at greater risk.

The details

According to the Illinois Department of Public Health, flu activity in the state has climbed to 'very high' levels, the most severe category. At least 100 people have died from the flu this season, with 77 deaths occurring just this month. Children and the elderly have been the hardest hit age groups, with three pediatric fatalities reported so far. Experts attribute the high case rates to declining vaccination, as people distrust the flu shot due to political rhetoric and misinformation about vaccine safety and efficacy.

  • The height of flu season is typically from early to mid-February.
  • For the week of Jan. 11-17, on average, 3% of all emergency department visits and 2.1% of hospital admissions were for the flu.

The players

Illinois Department of Public Health

The state's public health agency that has reported the severe flu outbreak and rising fatality rates.

Dr. Taylor Heald-Sargent

An associate professor at Northwestern University who specializes in the cold and flu, vaccines, and pediatric illnesses.

Robert F. Kennedy Jr.

The U.S. Secretary of Health and Human Services who has pushed for a large-scale overhaul and change to vaccine schedules and standards, contributing to growing vaccine skepticism.

Dave Koehler

An Illinois state senator who sponsored a bill that allows Illinois to issue its own vaccine standards in response to the federal changes.

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What they’re saying

“We've definitely seen just overall vaccination rates decreasing for years. We just keep trying to remind people that vaccines are safe and effective, and they've been well studied. And if you look back over the past century and a half, some of the biggest gains in modern medicine have been because of vaccines.”

— Dr. Taylor Heald-Sargent, Associate Professor, Northwestern University (wgil.com)

“Robert F. Kennedy Jr. has made a mockery of all that DHS should stand for. When the federal government fails, we as a state have to fill in the gaps and make sure that people have the right kind of information. We show that government actually cares and wants to provide them scientifically sound information.”

— Dave Koehler, Illinois State Senator (wgil.com)

What’s next

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The takeaway

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