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Research ArticleOriginal Article
Open Access

The use of neutrophil-to-lymphocyte ratio (NLR) as a marker for COVID-19 infection in Saudi Arabia

A case-control retrospective multicenter study

Anwar A. Sayed, Assem A. Allam, Ayman I. Sayed, Mohammed A. Alraey and Mercy V. Joseph
Saudi Medical Journal April 2021, 42 (4) 370-376; DOI: https://doi.org/10.15537/smj.2021.42.4.20200818
Anwar A. Sayed
From the Department of Medical Microbiology and Immunology (Sayed AA), Faculty of Medicine, Taibah University; from the Department of Internal Medicine (Sayed AI), Nojood Medical Center, Madinah; Department of Infection Control (Allam, Alraey, Joseph), King Abdullah Bin Abdulaziz University Hospital, Riyadh, Kingdom of Saudi Arabia; and form the Department of Surgery and Cancer (Sayed AA), Imperial College London, London, United Kingdom.
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  • For correspondence: [email protected]
Assem A. Allam
From the Department of Medical Microbiology and Immunology (Sayed AA), Faculty of Medicine, Taibah University; from the Department of Internal Medicine (Sayed AI), Nojood Medical Center, Madinah; Department of Infection Control (Allam, Alraey, Joseph), King Abdullah Bin Abdulaziz University Hospital, Riyadh, Kingdom of Saudi Arabia; and form the Department of Surgery and Cancer (Sayed AA), Imperial College London, London, United Kingdom.
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Ayman I. Sayed
From the Department of Medical Microbiology and Immunology (Sayed AA), Faculty of Medicine, Taibah University; from the Department of Internal Medicine (Sayed AI), Nojood Medical Center, Madinah; Department of Infection Control (Allam, Alraey, Joseph), King Abdullah Bin Abdulaziz University Hospital, Riyadh, Kingdom of Saudi Arabia; and form the Department of Surgery and Cancer (Sayed AA), Imperial College London, London, United Kingdom.
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Mohammed A. Alraey
From the Department of Medical Microbiology and Immunology (Sayed AA), Faculty of Medicine, Taibah University; from the Department of Internal Medicine (Sayed AI), Nojood Medical Center, Madinah; Department of Infection Control (Allam, Alraey, Joseph), King Abdullah Bin Abdulaziz University Hospital, Riyadh, Kingdom of Saudi Arabia; and form the Department of Surgery and Cancer (Sayed AA), Imperial College London, London, United Kingdom.
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Mercy V. Joseph
From the Department of Medical Microbiology and Immunology (Sayed AA), Faculty of Medicine, Taibah University; from the Department of Internal Medicine (Sayed AI), Nojood Medical Center, Madinah; Department of Infection Control (Allam, Alraey, Joseph), King Abdullah Bin Abdulaziz University Hospital, Riyadh, Kingdom of Saudi Arabia; and form the Department of Surgery and Cancer (Sayed AA), Imperial College London, London, United Kingdom.
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Article Information

vol. 42 no. 4 370-376
DOI 
https://doi.org/10.15537/smj.2021.42.4.20200818
PubMed 
33795491

Published By 
Saudi Medical Journal
Online ISSN 
1658-3175
History 
  • Received December 31, 2020
  • Accepted February 22, 2021
  • Published online March 31, 2021.

Copyright & Usage 
Copyright: © Saudi Medical Journal This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial License (CC BY-NC), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Author Information

  1. Anwar A. Sayed, MBBS, PhD⇑,
  2. Assem A. Allam, MBBS, MD,
  3. Ayman I. Sayed, MBBS,
  4. Mohammed A. Alraey, MBBS, MD and
  5. Mercy V. Joseph, BSN, CIC
  1. From the Department of Medical Microbiology and Immunology (Sayed AA), Faculty of Medicine, Taibah University; from the Department of Internal Medicine (Sayed AI), Nojood Medical Center, Madinah; Department of Infection Control (Allam, Alraey, Joseph), King Abdullah Bin Abdulaziz University Hospital, Riyadh, Kingdom of Saudi Arabia; and form the Department of Surgery and Cancer (Sayed AA), Imperial College London, London, United Kingdom.
  1. Address correspondence and reprint request to: Dr. Anwar A. Sayed, Department of Medical Microbiology and Immunology, Faculty of Medicine, Taibah University, Madinah, Kingdom of Saudi Arabia. E-mail: dsayed{at}taibahu.edu.sa ORCID ID: https://orcid.org/0000-0002-2243-0971
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Saudi Medical Journal: 42 (4)
Saudi Medical Journal
Vol. 42, Issue 4
1 Apr 2021
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The use of neutrophil-to-lymphocyte ratio (NLR) as a marker for COVID-19 infection in Saudi Arabia
Anwar A. Sayed, Assem A. Allam, Ayman I. Sayed, Mohammed A. Alraey, Mercy V. Joseph
Saudi Medical Journal Apr 2021, 42 (4) 370-376; DOI: 10.15537/smj.2021.42.4.20200818

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The use of neutrophil-to-lymphocyte ratio (NLR) as a marker for COVID-19 infection in Saudi Arabia
Anwar A. Sayed, Assem A. Allam, Ayman I. Sayed, Mohammed A. Alraey, Mercy V. Joseph
Saudi Medical Journal Apr 2021, 42 (4) 370-376; DOI: 10.15537/smj.2021.42.4.20200818
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Keywords

  • complete blood count
  • COVID-19
  • NLR
  • prognosis
  • Saudi Arabia

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© 2021 Saudi Medical Journal Saudi Medical Journal is copyright under the Berne Convention and the International Copyright Convention.  Saudi Medical Journal is an Open Access journal and articles published are distributed under the terms of the Creative Commons Attribution-NonCommercial License (CC BY-NC). Readers may copy, distribute, and display the work for non-commercial purposes with the proper citation of the original work. Electronic ISSN 1658-3175. Print ISSN 0379-5284.

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