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Postmortem autopsy findings in a fatal case of heartland virus disease acquired in the mid-Atlantic region, United States. A) Hematoxylin and eosin stain of patient accessory spleen; arrow indicates congestion with hemophagocytic histiocytes. Scale bar indicates 50 μm. B) Hematoxylin and eosin stain showing pulmonary hyperinflammation, including pleural thickening and adhesions, and pulmonary fibrosis, edema, and calcifications. Scale bar indicates 125 μm.
