GPT and sickle cell disease: Old age; body temperatures in the range of 37.3–38.0 °C; respiratory rate of > 24 bpm, diabetes; hypertension; obesity; sickle cell disease; showing symptoms of COVID-19; fever, shortness of breath, cough, fatigue, vomiting, and dizziness; elevated white blood cells, neutrophils, alanine aminotransferase and alkaline aminotransferase, lactate dehydrogenase, and ferritin; and abnormal bilateral chest CT images were associated with ICU admission.