&gt; They identified bacteria able to shrug off the drug of last resort - colistin - in patients and livestock in China.<p>…<p>&gt; It is likely resistance emerged after colistin was overused in farm animals.<p>What the heck?  Shouldn&#x27;t the antibiotic of last resort be used only as … a last resort? I can&#x27;t believe that any farm animal would be worth the use of such a drug (although I suppose it&#x27;s possible, were it the last of its breed or something).