Effectiveness of pay it forward intervention compared to free and user-paid vaccinations on seasonal influenza vaccination among older adults across seven cities in China: study protocol of a three-arm cluster randomized controlled trial
Abstract Background Seasonal influenza poses an enormous burden worldwide, with older adults facing preventable morbidity and mortality. However, seasonal influenza vaccination coverage is poor among older populations in China. Pay-it-forward (giving a person a free vaccine and an opportunity to don...
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| Main Authors: | , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
BMC
2025-07-01
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| Series: | BMC Public Health |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s12889-025-23301-2 |
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