10-year efficacy

Ten-year efficacy refers to how effectively a product, such as a vaccine or treatment, continues to work over a ten-year period. It measures how well it prevents illness, disease, or symptoms during that decade. For example, if a vaccine has 90% efficacy over ten years, it means it reduces the chance of getting the disease by 90% compared to someone unvaccinated. This helps assess the long-term value and durability of healthcare interventions, guiding decisions on their use, booster shots, or additional treatments to ensure continued protection.