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Measles: how declining vaccination levels in London are threatening herd immunity | Gavi, the Vaccine Alliance
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What is COVID-19 (coronavirus) herd immunity, and when will we achieve it? | MD Anderson Cancer Center
![Seth Berkley on X: "This is what herd immunity looks like: (via @marziehg) #vaccineswork https://t.co/oRGRQphl4G" / X Seth Berkley on X: "This is what herd immunity looks like: (via @marziehg) #vaccineswork https://t.co/oRGRQphl4G" / X](https://pbs.twimg.com/ext_tw_video_thumb/834414194988552193/pu/img/ugjM8qHRgM91ZPdw.jpg:large)
Seth Berkley on X: "This is what herd immunity looks like: (via @marziehg) #vaccineswork https://t.co/oRGRQphl4G" / X
![Herd immunity – also known as community immunity − is simple: Vaccines protect the people who get them but also anyone those people are near – even those with no immunity – Herd immunity – also known as community immunity − is simple: Vaccines protect the people who get them but also anyone those people are near – even those with no immunity –](https://www.texmed.org/uploadedimages/Current/2016_About_TMA/TMA_Publications/Texas_Medicine/Jan_20_TM_Vaccines.jpg?n=6925)