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.
Projected blue curve and region of projection (before inflection point) of next surge in shaded blue. Note that a 10 day washout period is forced before projections start. Matching country ranking tables shown underneath each plot.
