Image: WHO EN Herd Immunity Illustration 02 8Dec2020
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Description: Graphic from part one in a series of explainers on vaccine development and distribution. Originally published on the World Health Organization, Newsroom, Feature stories, How do vaccines work?
Title: WHO EN Herd Immunity Illustration 02 8Dec2020
Credit: URL https://www.who.int/news-room/feature-stories/detail/how-do-vaccines-work
Author: World Health Organization
Usage Terms: Creative Commons Attribution-Share Alike 3.0 igo
License: CC BY-SA 3.0 igo
License Link: https://creativecommons.org/licenses/by-sa/3.0/igo/deed.en
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