1 Which of the following are all risk factors for severe COVID-19 disease?
2 Evidence suggests a deficiency in the following can worsen COVID-19 severity:
3 When a vaccine causes antibody-dependent enhancement, it means:
4 What percentage of U.S. adults over the age of 18 report feeling lonely and socially isolated as a result of pandemic measures?
5 What does a PCR test tell you?
6 When it comes to universal mask wearing, the science backing up the recommendation is:
7 What is “fear appeal”?
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