No abstract available
Publication types
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Letter
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Research Support, Non-U.S. Gov't
MeSH terms
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2019-nCoV Vaccine mRNA-1273*
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BNT162 Vaccine*
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COVID-19 / epidemiology
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COVID-19 / prevention & control*
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COVID-19 Vaccines
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Humans
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Immunization, Secondary
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Qatar / epidemiology
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Retrospective Studies
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Vaccine Efficacy / statistics & numerical data*
Substances
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COVID-19 Vaccines
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2019-nCoV Vaccine mRNA-1273
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BNT162 Vaccine
Supplementary concepts
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COVID-19 breakthrough infections
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COVID-19 vaccine booster shot