File:Herd immunity.svg

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Summary

Description

English: When a critical portion of a community is immunized against a contagious disease, most members of the community are protected against that disease. This is known as "community (or 'herd') immunity." The principle of community immunity applies to control of a variety of contagious diseases, including influenza, measles, mumps, rotavirus, and pneumococcal disease.

The top box depicts a community in which no one is immunized and an outbreak occurs. In the middle box, some of the population is immunized but not enough to confer community immunity. In the bottom box, a critical portion of the population is immunized, protecting most community members.

not immunized, healthy

immunized, healthy

not immunized, sick

Based on an illustration by the National Institute of Allergy and Infectious Diseases (NIAID) originally uploaded as Community Immunity.jpg

Date 3 March 2017

Source Own work

Author Tkarcher

Other versions

File:Herd immunity.svg has 9 translations.

SVG development

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This diagram is translated using SVG switch elements: all translations are stored in the same file.

Licensing

I, the copyright holder of this work, hereby publish it under the following license:

This file is licensed under the Creative Commons Attribution-Share Alike 4.0 International license.

You are free:

to share – to copy, distribute and transmit the work
to remix – to adapt the work

Under the following conditions:

attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.

File history

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	Date/Time	Dimensions	User	Comment
current	18:20, 7 November 2022	784 × 962 (448 KB)	Sciking	Text fixes
	18:18, 7 November 2022	784 × 962 (448 KB)	Sciking	My bad, "bugfix"
	18:16, 7 November 2022	784 × 962 (448 KB)	Sciking	Added Lombard translation
	18:22, 11 August 2020	784 × 962 (444 KB)	Artem78	File uploaded using svgtranslate tool (https://svgtranslate.toolforge.org/). Added translation for ru.
	18:10, 11 August 2020	784 × 962 (439 KB)	Artem78	File uploaded using svgtranslate tool (https://svgtranslate.toolforge.org/). Added translation for ru.
	12:33, 29 May 2020	784 × 962 (434 KB)	Zaheen	File uploaded using svgtranslate tool (https://svgtranslate.toolforge.org/). Added translation for bn.
	16:38, 30 March 2020	784 × 962 (436 KB)	Gretarsson	Sorry, I have to upload another version because the code of the last one was not valid according to W3C because of double ID occurrences (these fuing IDs are so fuing annoying when revising code by text editor): When I inserted the additional lines in the Dutch text, I c-&-pd the respective text and span elements, and didn’t mind to change their IDs...
	16:18, 30 March 2020	784 × 962 (436 KB)	Gretarsson	Added width and height information to the svg tag; deleted property and value 'white-space:pre' from switch tag because it caused an offset of the labels in the original file view; revised Dutch labels in order to make the text fit better between the left and right graphic elements (inserted one more line below the fat black arrow in the middle and lower panels); made some minor formal edits (minor improvements of the code structure for better readability)
	23:08, 27 March 2020	512 × 629 (436 KB)	Gretarsson	sorry, my bad, the last version was a test version, nor the Catalan text is correctly adjusted/justified
	23:02, 27 March 2020	512 × 629 (439 KB)	Gretarsson	minor adjustments in English (word "contained" was missing in the lowest panel) and Catalan translations