Microbes slowed by one drug can rapidly develop resistance to another

The finding could lead to better ways to prescribe drug cocktails to knock out infections

MRSA bacteria

Being tolerant to at least one type of antibiotic helps deadly methicillin-resistant Staphylococcus aureus, or MRSA, bacteria (yellow in this scanning electron micrograph) more easily develop resistance to another antibiotic.

NIAID

Infectious bacteria that are down but not quite dead yet may be more dangerous than previously thought.