Antimicrobial resistance

Antimicrobial resistance (AMR) is the resistance of a microorganism to an antimicrobial medicine to which it was previously sensitive. It develops when a microorganism mutates or acquires a resistance gene. Resistant organisms (including bacteria, viruses, fungi, protozoa and helminths) are able to withstand attack by antimicrobial medicines such as antibiotics, antivirals and antimalarials, so that standard treatments become ineffective and infections persist and may spread to other people.

About AMR

Top story

Supporting Tajikistan in tackling the misuse of antibiotics

To respond to a recent increase in the demand for antibiotics for treating viral infections and to promote their rational use, WHO in collaboration with Tajikistan’s Ministry of Health and Social Protection have conducted trainings in 4 of the largest hospitals in the country. Together, they have reached over 500 clinicians and senior nurses.

World Antibiotic Awareness Week

18-24 November 2020

Advocacy briefs

AMR affects health in different contexts and focusing on different sectors can contribute to managing AMR.

Download the suite of advocacy documents


Video - Antibiotics don’t work on viruses like influenza


AMR and COVID-19

Download this infographic

Key resource

Central Asian and European Surveillance of Antimicrobial Resistance network (CAESAR)

A joint initiative to survey, contain and prevent the emergence and spread of antibiotic resistance in the European Region.

Data and statistics


The number of people who die every year in EU/EEA countries due to an infection with a resistant bacterial strain. Estimate for the whole WHO European Region is currently not available.