Infections tend to be most common among older children and adolescents but in 2024 have been rampant among young children, the CDC says.

Doctors say they are seeing an unusual spike in walking pneumonia cases in parts of Canada, particularly in children, but say treatment options are available

Cases of walking pneumonia are on the rise in northeastern Wisconsin. On Oct. 18, the state Department of Health Services issued a health alert noting the rise in pneumonia cases in young children. Walking pneumonia is most common among kids and young adults and can develop into pneumonia.