It’s that time of year — not just for holiday cheer, for the flu

Understanding the Flu Season

Kurt Williamson, an associate professor of biology at William & Mary, explains the reasons behind the flu's seasonal surge during fall and winter. The arrival of colder months brings the familiar flu season, with symptoms like aches and pains and the introduction of a new flu vaccine.

Why Does Flu Increase in Cold Weather?

Williamson, a virologist, investigates viruses within various environments to grasp their ecosystem roles. He focuses largely on bacteriophages, viruses that infect bacteria. His current research, funded by the Department of Agriculture, compares viral and bacterial communities in soils under organic and conventional farming.

How Influenza Spreads

Influenza is highly contagious because humans are social. The virus spreads primarily through close contact with infected individuals. It enters the body via the nose or throat by inhaling airborne particles or by touching contaminated surfaces and then touching the face.

“As a respiratory virus, influenza ultimately needs to get into your airways one way or another.”

Williamson’s Research Focus

The interview has been shortened and clarified for readability.

Author’s Summary

Kurt Williamson explores why flu infections rise in cold seasons, highlighting virus transmission and his ongoing research into viruses’ ecological impacts in different soil management practices.

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W&M News W&M News — 2025-11-04