Guide · Medicines

Antimicrobial resistance: when medicines stop working

Resistance happens when germs change so that the medicines used to treat them no longer work — making common infections harder to treat.

Sep 25, 2026Antopeloni2 min read
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What it is

Antimicrobials — antibiotics, antivirals, antifungals and antiparasitics — treat infections. Antimicrobial resistance (AMR) occurs when bacteria, viruses, fungi and parasites no longer respond to these medicines. WHO describes it as one of the top global public-health and development threats.

Why it grows

WHO names the misuse and overuse of antimicrobials in people, animals and plants as the main drivers. Poor infection prevention and lack of clean water and sanitation help resistant germs spread.

What you can do

  • Use antibiotics only when prescribed, exactly as prescribed (do's and don'ts).
  • Prevent infections: wash hands, prepare food hygienically, and keep vaccinations up to date.
  • Never share antimicrobial medicines or use leftovers.

Sources

Editorial update: 2026-09-26.

Medical disclaimer: this is a source-linked educational summary, not individual medical advice, diagnosis, prescription or interpretation of personal results. For severe or rapidly worsening symptoms, call 115.

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