[noodles23]

My bet is on the Chinese with their enormous pig farms which feed every pig a constant cocktail of antibiotics to ensure they grow faster to be the ground zero for an antibiotic-resistant epidemic.

Edit Source: A Chinese government official in charge of a meat-producing SOE boasted about it during a presentation seeking foreign investment

[ceph_]

The same practice is used by meat producers in the US.

In fact the practice was invented here. https://en.m.wikipedia.org/wiki/Antibiotic_use_in_livestock

[Fomite]

Though we're not particularly heavy users of colistin in livestock, unlike China, which is specifically called out in the article.