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Stringency Index for nonpharmaceutical interventions (NPIs), changes in work, transit, and retail mobility, and change in invasive pneumococcal disease (IPD), from March 2020 through July 2021 (dates given in month/date/year format). Mobility data were obtained from Google’s Community Mobility Reports, and Stringency Index data from the Oxford COVID-19 Government Response Tracker [21] (see Analysis Methods for details). Abbreviation: COVID-19, coronavirus disease 2019.
