A rare type of pneumonia infection, caused by Mycoplasma pneumoniae bacteria, is affecting young children in the United States. Cases have surged since spring, with high levels remaining stable despite a reported peak in late August. Local health experts are warning of this emerging threat, particularly among vulnerable populations.
Source: https://www.seattletimes.com/seattle-news/health/walking-pneumonia-the-great-masquerader-on-the-rise-in-wa