What defines an efficacious COVID-19 vaccine? A review of the challenges assessing the clinical efficacy of vaccines against SARS-CoV-2

Lancet Infectious Diseases
Feb 2021 Volume 21 Number 2 p149-296, e16-e35
https://www.thelancet.com/journals/laninf/issue/current

 

Review
What defines an efficacious COVID-19 vaccine? A review of the challenges assessing the clinical efficacy of vaccines against SARS-CoV-2
Susanne H Hodgson, et al