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

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.

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.

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.

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.

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.