Decline in Flu Vaccination Rates Among U.S. Adults from 2020 to 2024

Between 2020 and 2024, there has been a notable decrease in influenza vaccine uptake among adults in the United States, as revealed by a recent study published in PLOS Global Public Health. Researchers Hannah Melchinger from UT Southwestern Medical Center and her team conducted two comprehensive, cross-sectional surveys to assess vaccination trends over these years.

In May 2020, more than 60% of U.S. adults surveyed reported having received or intending to receive the flu vaccine in the upcoming months. However, by October 2024, this figure dropped to 54%, indicating a substantial decline in vaccination willingness. The decrease was particularly evident among demographic groups typically showing higher vaccination rates. Older adults over 35 years experienced an 11% reduction, males saw a 13% decline, and white, non-Hispanic, and more highly educated individuals also exhibited decreased vaccination rates.

The authors attribute this downward trend to shifting attitudes and intentions related to vaccination, influenced heavily by the COVID-19 pandemic. Factors such as perceived risk changes, widespread vaccine misinformation, and disinformation appears to have contributed to the hesitation and reduced uptake.

This trend raises concerns about public health preparedness and highlights the importance of addressing vaccine misinformation and improving vaccination campaigns to protect vulnerable populations against seasonal influenza.