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您的检索式：作者名="Ryan T.Novak"
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| 1 | COVID-19 Mortality and Vaccine Coverage——Hong Kong Special Administrative Region,China,January 6,2022-March 21,2022显示文摘Summary What is already known about this topic?COVID-19 vaccines are important tools to protect populations from severe disease and death.What is added by this report?Among persons aged≥60 years in Hong Kong,49%,had received≥2 doses of a COVID-19 vaccine,and vaccination coverage declined with age.During January-March 2022,reported COVID-19-associated deaths rose rapidly in Hong Kong.Among these deaths,96%occurred in persons aged≥60 years;within this age group,the risk for death was 20 times lower among those who were fully vaccinated compared with those who were unvaccinated. | Dallas J.Smith Avi J.Hakim Gabriel M.Leung Wenbo Xu WWilliam Schluter Ryan T.Novak Barbara Marston Bradley S.Hersh | 2022 | China CDC weekly2022，4，14： | 6 |
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