The number of global mutations of Covid-19 by the NextStain Team is both fascinating and shocking.
This Tweet on Wisconsin caught my attention.
The global data is even more interesting.
The site is interactive. This is how the chart looks if one click on the US.
Global Map of How the Pandemic Spread
The above map shows the US was infected by China, Australia, and Europe.
Then the US took up global spreading leadership to South America, Africa, and Canada, and in a major way back to Australia and especially back to Europe.
If you missed it, please see Huge Battle Over Covid-19 Tests and Trump's Liberation Tweets