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ON THE COVER:

Pneumonia of mixed etiology, conceptual illustration. Human lungs and close-up view of bacteria and viruses, two of the causative agents of pneumonia.

Image credits: Kateryna Kon/Science Source (Unique ID: 2117853). Image and text copyright ©2022 Science Source/Photo Researchers, Inc. All rights reserved.

See related article:

“Changes in Streptococcus pneumoniae Susceptibility in Wisconsin: Implications for Clinical Treatment Decisions for Respiratory Infections” pp. 185–194..