From  Worldometer , total world covid cases and deaths.  Nine waves?  Or ten? Three countries continue to dominate new covid cases/week, with South Korea still #1, by far:                                   This past week   Previous week World                     300,529              490,578 #1  South Korea     216,046              359,479 #2  USA                   56,391                85,783 #3  Brazil                   9,713                10,741 Of course, many countries don't do any reporting anymore. During the past week, South Korea had 72% of all covid cases, USA 19% and Brazil 3%, or these countries had 94% of all the world cases.  South Korea had 4211 new cases/million people, USA 168  and Brazil 45. The grand summary regarding percentage of citizens who were infected with covid, and mortality rate in the right column, which is deaths divided by total cases. S. Korea   66%   0.11% Australia  45%   0.19% Italy         43%   0.74% Taiwan     43%   0.19% USA         32%    1.