China and Iran have been significant trading partners since the opening of the Silk Road in the 12 century. It is how the Black Death moved from China to Europe.
The transmission of the disease is following a natural path—East to west.
I look at the map and see people thinking this is coming across the Pacific. It’s probably going to come through the Middle East and Africa where hygiene is not as much a rule as it is a suggestion.
And the Black Death didn’t have airplane passengers’ luggags to distribute it in mere hours.