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    The symptoms of COVID-19 infection appear after an incubation period of approximately 5.2 days [12]. The period from the onset of COVID-19 symptoms to death ranged from 6 to 41 days with a median of 14 days [8]. This period is dependent on the age of the patient and status of the patient's immune system. It was shorter among patients >70-years old compared with those under the age of 70 [8]. The most common symptoms at onset of COVID-19 illness are fever, cough, and fatigue, while other symptoms include sputum production, headache, haemoptysis, diarrhoea, dyspnoea, and lymphopenia [5,6,8,13]. Clinical features revealed by a chest CT scan presented as pneumonia, however, there were abnormal features such as RNAaemia, acute respiratory distress syndrome, acute cardiac injury, and incidence of grand-glass opacities that led to death [6]. In some cases, the multiple peripheral ground-glass opacities were observed in subpleural regions of both lungs [14] that likely induced both systemic and localized immune response that led to increased inflammation. Regrettably, treatment of some cases with interferon inhalation showed no clinical effect and instead appeared to worsen the condition by progressing pulmonary opacities [14] (Fig. 2).

    Al panpam güveniyorum sana
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    1. 1.
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      Bu ne amk oxford seviyesi lazım bu ingilizceye
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    2. 2.
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      Hayırlı bir işe lazım kırk yılın başı bir şey istedik sizden :(
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    3. 3.
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      translate çevirisi lazım olsa buraya yazmazdım zaten biraz mantık lütfen
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    4. diğerleri TTTTYY 1
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