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Hemoglobin
international journal for hemoglobin research
Volume 47, 2023 - Issue 2
144
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Review Articles

Case Fatality Rate and Severity of COVID-19 among Patients with Sickle Cell Disease: A Systematic Review and Meta-Analysis

ORCID Icon, ORCID Icon, ORCID Icon & ORCID Icon
Pages 85-96 | Received 09 Sep 2022, Accepted 20 May 2023, Published online: 16 Jun 2023
 

Abstract

The sickle cell disease (SCD) population has been considered particularly vulnerable to viral pandemics since the emergence of H1N1 in 2009. In this sense, the advance of the COVID-19 pandemic from 2020 has brought this group of patients to the center of concern. However, scientific knowledge about the susceptibility of patients with SCD to a severe COVID-19 pandemic is still insufficient, and efforts to establish a general profile of the disease in these patients, remain inadequate. The present study, therefore, sought to characterize the case fatality rate and severity of COVID-19 in patients with SCD throughout the world. A systematic review of Pubmed/MEDLINE, Scopus, Cochrane Library, and Virtual Health Library databases through December 2021 was then performed. Subsequently, the primary and secondary outcomes were used in the meta-analysis in RStudio® software. Seventy-two studies were included with 6,011 SCD patients confirmed to have SARS-CoV-2 infection between mid-2020 and early 2022. The mean age of patients was 27 years. During this period, 218 deaths caused by COVID-19 were reported in the studied population, corresponding to an overall case fatality rate of 3%. In addition, 10% of patients with SCD were admitted to the ICU after complications caused by COVID-19, and 4% of them required invasive ventilatory support. In conclusion, the high fatality rate, intensive care unit admission and need for mechanical ventilation due to COVID-19 in young patients with SCD indicate that this population is at high risk for severe disease progression.

Acknowledgements

T.S.B. is grateful forthe Graduate Program (Professional Master’s) in Teaching Health and Environmental Sciences at FaculdadeDinâmicado Vale do Piranga for master scholarship.

Ethical approval

Not applicable.

Author contributions

T.S.B performed the search, selection, extraction, and writing. J.CM.B performed proofreading, selection conflict assessment, orientation and review. E.M.L-B performed the search and selection. RSB performed the orientation and review.

Disclosure statement

The authors report no conflicts of interest. The authors alone are responsible for the content and writing of this article.

Additional information

Funding

The author(s) reported there is no funding associated with the work featured in this article.

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