Usually manking can improve a human body immunity ability consumedly. 经常使可大大提高人体免疫能力。
The influenza vaccination programme aims to boost their immunity and protect them against severe complications of influenza infection. 流行性感冒预防注射计划目的是提高安老院舍长者对抗流感的免疫能力，和减低他们因流感而引致并发症的机会。
