An uncontrolled and placebo group lacking study on 35.000 patients suggests convalescent plasma shows a 3% reduced mortality in Covid-19 patients.
Infusing hospitalized Covid-19 patients with blood plasma from people who recovered from the disease appeared to show a benefit in a nationwide study, but the study’s lack of a placebo group left several experts struggling to interpret the data. The study, which enrolled more than 35,000 patients, found that quickly administering so-called convalescent plasma had