Children Causes Pediatric Cases Undiagnosed Pneumonia Undiagnosed Pneumonia Outbreak Clusters Clusters of Pneumonia Mycoplasma pneumoniae pneumonia Mysterious Pneumonia Outbreaks Known Pathogens Child Pneumonia Cases Pediatric Pneumonia Pediatric Pneumonia Cases M. pneumoniae Outbreaks Pneumonia Cases in Children Pneumonia Causes Wolfram Syndrome Children's Pneumonia
Health authorities attribute the outbreaks to common viruses and bacteria, with no links between the clusters in different regions.