Population Immunity of Natural Infection, Primary-Series Vaccination, and Booster Vaccination in Qatar during the COVID-19 Pandemic: An Observational Study

April 29, 2023

medRxiv

This working paper estimates the effectiveness of previous infection, mRNA primary-series vaccination, and mRNA booster (third-dose) vaccination in preventing COVID-19 infection.

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Population Immunity of Natural Infection, Primary-Series Vaccination, and Booster Vaccination in Qatar during the COVID-19 Pandemic: An Observational Study

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