New England Journal of Medicine:
"Clinically, high effectiveness of vaccines against severe disease and death is critically important. However, from a public health perspective, reducing the incidence of infection is also vital. As of June 19, 2021, Covid-19 vaccines are estimated to have prevented 7.2 million infections and 27,000 deaths in England alone.12 Similarly, in the United States, an estimated 279,000 deaths and up to 1.25 million hospitalizations have been averted as of the end of June 2021.13 As the delta variant affects various countries, including the United States, the current imperative is to vaccinate as many people as possible, as quickly as possible."