primary atypical pneumonia
noun
: any of a group of pneumonias (such as Q fever and psittacosis) caused especially by a virus, mycoplasma, rickettsia, or chlamydia
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“Primary atypical pneumonia.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/primary%20atypical%20pneumonia. Accessed 31 Oct. 2025.
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