... said that resistance would spread around the world ...
-
Resistance does not spread; microorganisms spread.
Reading post #4, the resistance can be passed between different kinds of bacteria, so in this case you could say resistance itself would spread.
Resistance spreads when the bacteria travel in food or in hosts, and it spreads to different strains or species when bacteria trade bits of DNA.
So you can shake hands with someone who hugged someone coming back from China, and your S.aureus can acquire resistance from a few travelling bacteria, and the resistance - that gene - has effectively spread.
You’re privileging organisms over genes, FRiend.
“Resistance does not spread; microorganisms spread.”
Resistance does spread. It can be transferred from one organism to another and spread within a population.