Doctors Urge Flu Vaccinations Amid Unseasonably Early Case Rise

The fall and winter respiratory season has begun earlier than usual, with doctors advising Americans to get their flu vaccines now as cases show a sustained increase. Typically, flu season begins in October, peaks between December and February, and subsides by spring. However, data from the Centers for Disease Control and Prevention (CDC) indicates a rise in flu activity starting as early as the week ending August 8.

In the two weeks between September 5 and September 19, flu test positivity doubled from 1.3 percent to 2.7 percent. Flu-associated visits to emergency departments have also seen an increase, though they remain at low levels, accounting for 0.3 percent of all ED visits. While most states are classified as having 'minimal' flu activity, Washington, Hawaii, West Virginia, and South Carolina are among the four states showing slightly elevated levels.

Dr. Helen Chu, a professor of Infectious Diseases at the University of Washington, noted that the virus has appeared "a little bit earlier than we would've expected for flu." She observed in Seattle and Washington state that cases are emerging "quite early" compared to the usual December or January peak. Chu advises that individuals should get their flu vaccines immediately to ensure protection against the early surge.

The seasonal flu shot is updated annually to protect against the most common and severe strains, influenza types A and B. It typically provides protection for six to eight months. The CDC reports that the flu shot reduces the risk of doctor visits by 34 percent and hospitalizations by 30 percent. However, it takes up to two weeks for the body to develop full immunity after vaccination, making early vaccination crucial.

Influenza, a highly contagious respiratory infection, affects approximately eight percent of the U.S. population annually. Symptoms can include fever, cough, sore throat, stuffy nose, headaches, and fatigue, with potential complications like pneumonia and influenza-associated encephalopathy. Last year's flu season was particularly severe, with a surge driven by a highly mutated variant of the Influenza A (H3N2) virus, which led to a rapid spike in cases due to diminished population immunity.

The 2025-2026 respiratory season saw an estimated 32 million flu cases, resulting in approximately 390,000 hospitalizations and 24,000 deaths, according to the CDC. Health officials recommend preventative measures such as regular handwashing and avoiding contact with symptomatic individuals. Treatment for the flu can include rest, hydration, over-the-counter medications, and in severe cases, prescription antivirals.