Name: 群體免疫力的力量
Uploaded: 2015-02-25T16:03:23Z
Duration: 14 min 31 s
Description: 疫苗如何在即使一些人因为太小无法接种疫苗的情况下预防疾病？那是一个叫做「群体免疫」的概念，它仰赖于多数人们打疫苗来破坏传染链。从事健康研究的萝蜜娜．李布斯特叙述群体免疫力如何使得致命的H1N1流感在她的家乡得到控制。

疫苗如何在即使一些人因为太小无法接种疫苗的情况下预防疾病？那是一个叫做「群体免疫」的概念，它仰赖于多数人们打疫苗来破坏传染链。从事健康研究的萝蜜娜．李布斯特叙述群体免疫力如何使得致命的H1N1流感在她的家乡得到控制。

群體免疫力的力量

Herd immunity arises when enough people are vaccinated to halt the spread of disease, protecting even those too vulnerable or young for vaccines. Decades ago, infectious diseases like polio and measles devastated communities, but vaccination campaigns slashed those risks. During the 2009 H1N1 pandemic, hospitals that vaccinated 93 percent of at-risk groups saw cases drop from over 250 to zero. Vaccination is not just self-protection; it is an act that safeguards entire populations.

Vaccines Protect Communities By Building an Invisible Shield

Why we must get vaccinated: to protect those who can't

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萝蜜娜．李布斯特: 群體免疫力的力量