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. 2022 Apr 9;11(1):1072–1078. doi: 10.1080/22221751.2022.2060137

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© 2022 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 2. — Mortality of COVID-19 during the fifth wave is reduced with vaccination. (A) The overall mortality rate (number of deaths per million as calculated by dividing the number of deaths by the number of people of the specific population) and mortality rates of all age groups in the period of 31 December 2021 to 17 March 2022 in Hong Kong. N/A: not applicable. (B) The hospitalization rate (hospitalization per million) of each age group. (C) The ICU entry rate (ICU entry per million) of each age group. (D) The overall mortality rate (number of deaths per million) and mortality rates of all age groups without or with first dose or second-booster dose of COVID-19 vaccination. Unpaired Student’s t-test was performed to judge the statistical significance of the difference between groups. Symbols (***P < 0.001; **P < 0.01; *P < 0.05; #P > 0.05.) above bars represent P values comparing the vaccinated age group with the unvaccinated counterpart of the same age. P-value comparing the same age group having first dose vaccination with second/booster dose vaccination was indicated above horizontal lines. N/A: not applicable (Original data: https://www.coronavirus.gov.hk/ eng/index.html).