Copper antimicrobials can drive antibiotic resistance in bacteria, but there's a fix, scientists say

Copper has emerged as an ally in the battle against antibiotic-resistant bacteria. Copper sulfate liquids, for example, have been used since the 1700s to control fungal infections in vineyards, orchards and many other kinds of agricultural settings. Copper surfaces are now often used in health care to help keep facilities sterile. But too much of a good thing can create the very problem it's trying to solve.