Abstract
Surveillance for pandemic H1N1 influenza was conducted between June 1, 2009, and May 31, 2010, among adults at 40 participating hospitals in the Canadian Nosocomial Infection Surveillance Program. The first wave was characterized by a higher proportion of Aboriginals and pregnant women as well as severe outcomes, compared to the second wave.
MeSH terms
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Adolescent
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Adult
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Canada / epidemiology
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Cross Infection / epidemiology*
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Female
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Hospitalization / statistics & numerical data*
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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 / mortality
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Male
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Medical Audit
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Middle Aged
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Pandemics / statistics & numerical data*
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Population Surveillance*
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Pregnancy
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Pregnancy Complications, Infectious / epidemiology
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Pregnancy Complications, Infectious / virology
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Retrospective Studies
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Young Adult