World health organization

10 facts on antimicrobial resistance

A hand holding antimalarial drugs
WHO/S. Hollyman

What is antimicrobial resistance?

Antimicrobial resistance or drug resistance is the ability of a microorganism (like bacteria, viruses and some parasites) to stop an antimicrobial (such as antibiotics, antivirals and antimalarials) from working against it. As a result, standard treatments become ineffective, infections persist and may spread to others.

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