Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2021 May 7;7(5):459–470. doi: 10.1002/cjp2.220

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© 2021 The Authors. The Journal of Pathology: Clinical Research published by The Pathological Society of Great Britain and Ireland & John Wiley & Sons, Ltd.

This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc-nd/4.0/ License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.

PMC Copyright notice

Representative histologic findings in cases of fatal seasonal influenza taken from archival specimens. (A) DAD histologically indistinguishable from COVID‐19 (×50 magnification). (B) Interstitial inflammation with reactive, detached pneumocytes (×400 magnification). (C) Reactive, detached pneumocytes in a background of alveolar hemorrhage (×200 magnification). (D) Thrombosis (×50 magnification). (E) Infarction (×50 magnification). (F) Superimposed bacterial pneumonia (×200 magnification; note the presence of prominent and occasionally multinucleated pneumocytes).