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.
The following information was missing from the Funding section: The authors are grateful to the UK Department for International Development (DFID) for funding this work through the HPAI risk reduction project (GCP/UK/804/INT).
No competing interests declared.
