vaccine hesitancy

noun

plural vaccine hesitancies

: the reluctance or refusal to have oneself or one's children vaccinated

Vaccine hesitancy can contribute to the continued spread of disease because vaccinations are not being administered.

—Fred Steiner

Scientists are expressing concern over what they call "vaccine hesitancy" regarding the COVID-19 pandemic.

—Katie Camero

WHO [World Health Organization] notes that measles cases have increased by 30 percent across the globe, and while not all cases are due to vaccine hesitancies, some countries that had nearly eliminated the disease have seen its return.

—Katie Gillespie

Examples of vaccine hesitancy in a Sentence

Recent Examples on the Web

While some of this is due to vaccine hesitancy, the main reason these children miss vaccinations is a caregiver's lack of awareness or difficulty accessing health facilities. —Suzanne Nuyen, NPR, 10 Sep. 2025

Similarly, vaccine misinformation has soared since the COVID-19 pandemic, as has vaccine hesitancy among adults and children. —Omer Awan, Forbes.com, 21 Aug. 2025

But Higgins said the overall picture on vaccine hesitancy isn’t clear. —Ciara McCarthy, Fort Worth Star-Telegram, 21 Aug. 2025

The administration has already terminated thousands of research grants at agencies like the NSF and NIH, including on topics like transgender health, vaccine hesitancy, misinformation and diversity, equity and inclusion. —Adithi Ramakrishnan, Chicago Tribune, 8 Aug. 2025

Word History

First Known Use

2002, in the meaning defined above

Medical Definition

vaccine hesitancy

noun

: the reluctance or refusal to have oneself or one's children vaccinated

Scientists are expressing concern over what they call "vaccine hesitancy" regarding the COVID-19 pandemic.

—Katie Camero, The Miami Herald

Reasons for vaccine hesitancy fit into 3 categories: lack of confidence (in effectiveness, safety, the system, or policy makers), complacency (perceived low risk of acquiring VPDs [vaccine preventable diseases]), and lack of convenience …

—Shixin Shen and Vinita Dubey, Canadian Family Physician

WHO [World Health Organization] notes that measles cases have increased by 30 percent across the globe, and while not all cases are due to vaccine hesitancies, some countries that had nearly eliminated the disease have seen its return.

—Katie Gillespie, The Columbian (Vancouver, Washington)