Fast Five Quiz: COVID-19 Variants

Glenn Wortmann, MD


August 03, 2022

Editor's Note: The information in this quiz is current as of August 3, 2022. For the most recent COVID information, see

As of early August 2022, nearly 6.4 million deaths worldwide were directly attributed to COVID-19, and the World Health Organization estimated that the full mortality associated directly or indirectly with the COVID-19 pandemic was closer to 15 million deaths. Vaccination against SARS-CoV-2 is of the utmost importance for ending the global pandemic, and several effective vaccines across multiple platforms have been rolled out internationally. Although > 12 billion vaccine doses have been administered to date, emerging variants of SARS-CoV-2 (eg, Omicron and its subvariants) have raised concerns about the efficacy of the currently used vaccines against these variants. Worldwide, scientists are working around the clock to learn more about these variants, transmissibility rates, and efficacy of currently authorized vaccines against them.

How familiar are you with COVID-19 variants? Test your knowledge with this quick quiz.


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