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. 2020 Oct 28;8(11):1675. doi: 10.3390/microorganisms8111675

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© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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(A) Group W IMD cases in England from 2011/2012 to 2019/2020 stratified by age groups. Age groups offered vaccines are highlighted with square markers (Public Health England: unpublished data). (B) Percentage distribution of group W IMD cases in England from 2011/2012 to 2019/2020 by age group.