| Descriptive and Analytical Themes | Insufficient promotion for influenza vaccination by healthcare professionals | Anti-vaccination influence | Insufficient local policies for encouraging influenza vaccination in elders | Negative personal experience of influenza vaccination | The negative perception of influenza vaccination from social networks | Cultural influence of influenza vaccination |
| Insufficient promotion for influenza vaccination by healthcare professionals | NA | ✓ |
| ✓ | ✓ |
|
| Anti-vaccination influence | ✓ | NA |
| ✓ | ✓ | ✓ |
| Insufficient local policies for encouraging influenza vaccination in elders |
|
| NA | ✓ | ✓ | ✓ |
| Negative personal experience of influenza vaccination | ✓ | ✓ | ✓ | NA |
|
|
| The negative perception of influenza vaccination from social networks | ✓ | ✓ | ✓ |
| NA |
|
| Cultural influence of influenza vaccination |
| ✓ | ✓ |
|
| NA |