USA: Mysterious respiratory illness.
Nelson
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D000293:Adolescent; D000328:Adult; D000368:Aged; D002044:Bunyaviridae Infections / Q000382:microbiology*; D006476:Orthohantavirus; D006801:Humans; D012128:Respiratory Distress Syndrome / Q000382:microbiology*; D015206:Southwestern United States