On: Global eradication of wild poliovirus type 2 declared

[maxerickson]

It depends on what you meant by pathway:

https://en.wikipedia.org/wiki/Antimicrobial_resistance#Mecha...

The mechanism can be encoded on a plasmid, for example:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC514751/

So in that case, a bacteria could import the mechanism wholesale from a resistant population.

(Plasmids are fragments of DNA that bacteria can swap back and forth, even across species)