Figure 2.
Evolution of Canadian economic evaluations of vaccines over time. Temporal trends in (A) funding source and (B) study design of 42 studies published from 1993-2012.
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.