| Age-based strategies | At-risk strategies |
| Target group easy to access | High-risk people often difficult to access (e.g. socially disadvantaged) |
| Infrastructures usually exist to administer vaccines | Responsibility for vaccination lies with different healthcare professionals |
| Community protection (herd effect) is possible | Difficult to establish a herd effect |
| Generally higher levels of vaccine uptake achieved | Unlikely to achieve high levels of vaccine uptake |