No abstract available
MeSH terms
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Air Conditioning* / adverse effects
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Air Conditioning* / history
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Air Conditioning* / instrumentation
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Centers for Disease Control and Prevention, U.S.
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Community-Acquired Infections / epidemiology
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Cross Infection / epidemiology
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Disease Outbreaks*
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Equipment Design
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History, 20th Century
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Humans
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Influenza A Virus, H1N1 Subtype / isolation & purification
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Influenza, Human / epidemiology
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Influenza, Human / history
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Legionella pneumophila / isolation & purification*
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Legionnaires' Disease* / diagnosis
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Legionnaires' Disease* / epidemiology
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Legionnaires' Disease* / history
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Philadelphia
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Public Health* / history
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United States / epidemiology