2023 Ohio pneumonia outbreak
In late 2023, an outbreak of mycoplasma pneumonia occurred in Ohio in the United States, primarily affecting children. Despite it occurring at around the same time, experts say that it is unrelated to the 2023 Chinese pneumonia outbreak. The average age of children affected is eight years old, with some cases being as young as three. As of December 1, 2023, investigation as to the cause is still ongoing.