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Table 1 Etiology of ground-glass opacities in study groups

From: Diagnostic performance of chest CT in differentiating COVID-19 from other causes of ground-glass opacities

COVID-19 80
Viral pneumonia 36
 Influenza A (H1N1) 15
 SARS 4
 MERS 2
 RSV 3
 HSV 4
 Adenovirus 2
 Rhinovirus 6
Atypical bacterial pneumonias 8
 Mycoplasma 4
 Chlamydia 3
 Klebsiella 1
PJP 6
Interstitial pneumonias 15
 NSIP 6
 DIP 3
 COP 6
HP 8
EP 4
DAH 6
Drug-induced lung injury 7
Pulmonary edema (cardiogenic and non-cardiogenic) 10
  1. SARS sever acute respiratory syndrome, MERS Middle East respiratory syndrome, RSV respiratory syncytial virus, HSV herpes simplex virus, PJP Pneumocystis jiroveci pneumonia, NSIP non-specific interstitial pneumonia, DIP desquamative interstitial pneumonia, COP cryptogenic interstitial pneumonia, HP hypersensitivity pneumonia, EP eosinophilia pneumonia, DAH diffuse alveolar hemorrhage