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.
Note: arrows indicate the next country where the organisation implemented PBF. Source: compiled by the authors using the documents presented in S1 Table and information available on the websites of AEDES, Cordaid, and SINA Health.
