Estimating global changes in routine childhood vaccination coverage during the COVID-19 pandemic, 2020-2021.

"appendix a supplementary data the following are the supplementary data to this article: supplementary data 1 supplementary data 2 supplementary data 3 supplementary data 4 data availability the data is openly available online."

"Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper."

"9 Funding This work was supported by a grant PRESTO (JPMJPR22R8) from the Japan Science and Technology Agency. The funder of the study had no role in the study design, data collection, data analysis, data interpretation, or writing of the paper. The authors had full access to all the data in the study and had final responsibility to submit for publication."