MMWR  Weekly: Current Volume (71) April 15, 2022 / No. 15
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Surveillance to Track Progress Toward Polio Eradication — Worldwide, 2020–2021
COVID-19 Mortality and Vaccine Coverage — Hong Kong Special Administrative Region, China, January 6, 2022–March 21, 2022
Effectiveness of COVID-19 mRNA Vaccination in Preventing COVID-19–Associated Hospitalization Among Adults with Previous SARS-CoV-2 Infection — United States, June 2021–February 2022