noun 下载 🔗分享 群体免疫 The indirect protection against the spread of a contagious disease in a given population caused by the immunity of a significant proportion of the population to that particular disease; the immunity may have been obtained through having survived the infection or through vaccination. Examples : "Vaccination programs aim to establish herd immunities so that even those who cannot be vaccinated are protected from diseases like measles. " 疫苗接种计划旨在建立群体免疫，这样即使是那些无法接种疫苗的人也能免受麻疹等疾病的侵害。 medicine virus disease biology organism 与AI对话词汇游戏阅读练习
