The Correlation between BCG Immunization Coverage and the Severity of COVID-19
6 Pages Posted: 7 Apr 2020
Date Written: April 5, 2020
Miller et al. reported a correlation between BCG immunization policy with the reduced morbidity and mortality for COVID-19. Here, we adopt different data to check this correlation, but we find that the correlation is not significant in general, between countries with BCG and without BCG. It is only marginally significant among countries with BCG when median age is also considered. We argue that more investigation is needed.
Note: Funding: YL was supported by College Scientific Research Project of Xinjiang, China (No.: XJEDU2018Y021). DH was supported by General Research Fund (15205119) of Research Grants Council of Hong Kong and an Alibaba-Hong Kong Polytechnic University Collaborative Research project.
Conflict of Interest: DH was supported by an Alibaba (China) - Hong Kong Polytechnic University Collaborative Research project. Other authors declare no competing interests.
Ethical Approval: The ethical approval or individual consent was not applicable. Availability of data and materials. All data and materials used in this work were publicly available.
Keywords: COVID-19; BCG; morbidity and mortality; median age
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