FIGURE 3—

Representative Pulmonary Histopathology of (a) Fatal 1918 Influenza and (b) Fatal SARS-CoV-2 Infection Showing Acute Diffuse Alveolar Damage With Pulmonary Edema and Hyaline Membranes

Source. Sauter et al.¹¹ and Sheng et al.¹²

Note. SARS-CoV-2 = severe acute respiratory syndrome coronavirus 2. The histologic patterns of acute diffuse alveolar damage are virtually indistinguishable.