What's Causing the Mysterious Wave of Childhood Pneumonia in China?
A surge in respiratory disease in China appears to be caused by known pathogens, but the pattern of infections is still unusual
![What's Causing the Mysterious Wave of Childhood Pneumonia in China?](https://static.scientificamerican.com/sciam/cache/file/0C209921-7C6C-4E4B-ACCB8E92ECB7C9EE_source.jpg?#)
A surge in respiratory disease in China appears to be caused by known pathogens, but the pattern of infections is still unusual
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