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. 2021 Nov 17;19:281. doi: 10.1186/s12916-021-02157-4

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© The Author(s) 2021

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.

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Fig. 2 — Measles vaccine coverage by dose and country, 2000–2050. Historical coverage data by dose and country were obtained from the WHO databases, while future trends were assumed to increase by 1% every year for the first (MCV1) and second (MCV2) doses delivered through routine programmes. Supplementary immunisation activities (SIAs) were assumed to occur every 3 years in the future projection, with the coverage seen in the most recent year. Multiple rounds of SIAs may happen within a single year in a country. Colours of lines and circles represent different assumptions on the effect of COVID-19 related disruptions. Vertical dashed lines mark the year 2000 and the numbers next to the lines show the absolute difference in MCV1 and MCV2 coverage estimates in the COVID-19 scenario compared to the baseline