🌐 bbc.co.uk
What is herd immunity? - Infection and response: Video playlist - BBC Bitesize
Sophie Ward explains how herd immunity can protect populations against infectious disease.
↗ https://www.bbc.co.uk/bitesize/topics/zdgds82/watch/zs8bnk7Sophie Ward explains how herd immunity can protect populations against infectious disease.
↗ https://www.bbc.co.uk/bitesize/topics/zdgds82/watch/zs8bnk7