No abstract available
MeSH terms
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Adult
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Aged
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COVID-19 / epidemiology*
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COVID-19 / prevention & control*
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COVID-19 / transmission
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Communicable Disease Control / methods*
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Disease Outbreaks*
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Disease Transmission, Infectious / prevention & control*
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Female
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Humans
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Male
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Middle Aged
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SARS-CoV-2
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Vietnam / epidemiology