Surveillance to Track Progress Toward Polio Eradication - Worldwide, 2020-2021

Published on April 14, 2022

This report describes an analysis of acute flaccid paralysis surveillance data with high risk for poliovirus transmission.

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EARLY RELEASE: 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

April 12, 2022
This report describes COVID-19 mRNA vaccination effectiveness in preventing COVID-19 hospitalizations among people previously infected.

EARLY RELEASE: Hospitalizations of Children Aged 5-11 Years with Laboratory-Confirmed COVID-19 - COVID-NET, 14 States, March 2020-February 2022

April 19, 2022
This report describes how unvaccinated children 5-11 years old were more likely to be hospitalized with COVID-19 than vaccinated children during initial Omicron predominance.