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Table 2 The 5A domains for root causes of under vaccination

From: RTS,S/AS01 malaria vaccine pilot implementation in western Kenya: a qualitative longitudinal study to understand immunisation barriers and optimise uptake

5A Domains

Potential factors related to each domain

Awareness

Knowledge of vaccines & schedule

Availability of information

Consideration of vaccination

Affordability

Direct & indirect costs associated with vaccination (i.e., transportation to facility)

Acceptance

Perceived safety (including side effects) & efficacy of the vaccine

Perceived risk, vulnerability to disease

Individual characteristics: health beliefs, omission bias, trust, past behaviours

Social context: social responsibility, peer influence, HP influence

Access

Geographical location

Location of birth

Contact with health services (regular vs. infrequent)

Convenience of access

Activation

Factors that helped nudge a person to take up a vaccine

  1. Thomson A, Robinson K, Vallée-Tourangeau G. The 5As: A practical taxonomy for the determinants of vaccine uptake. Vaccine. 2016;34(8):1018–24