Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Forest plot of pooled odds ratios (ORs) of mortality following treatment with convalescent plasma or convalescent serum, excluding studies with <5 patients (n = 5 studies). Weights are from random-effects analysis. Abbreviation: CI, confidence interval.
