Table 2.
Definitions of key terms used in vaccine confidence measures
| Term | Definition |
|---|---|
|
| |
| Thinking and feeling | |
| Disease risk appraisal | Thoughts and feelings about potential health problems caused by infectious agents. Includes perceived risk, worry, fear, and anticipated regret. |
| Confidence | Attitudes and beliefs that vaccines work, are safe, and are part of a trustworthy medical system. Includes perceived importance and effectiveness of vaccines and concerns about vaccines being unsafe. |
| Motivation | |
| Hesitancy | Motivational state of being conflicted about, or opposed to, getting vaccinated; includes intentions and willingness. |
| Intention | Aim or plan to get vaccinated. |
| Behaviour | |
| Acceptance | Willing receipt of vaccination. |
| Coverage | Estimated percentage of individuals who received specific vaccines. Low coverage reflects both individuals who will never be vaccinated and those for whom vaccination is delayed but eventually occurs. |
| Delay | Receiving a vaccination after the recommended age. Delay can be the result of a deliberate choice, passive inaction, or forces external to the individual, such as a vaccine shortage. |
| Refusal | Declining to receive a vaccine when offered. |
| Un-vaccinated | Has not received any of the recommended vaccines for their age. |
| Under-vaccinated | Has received some, but not all, of the recommended vaccines for their age. |
| Uptake | Receipt of a vaccine. |