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Selection

Usage of antibiotics in healthcare In the presence of antibiotics, minor resistant bacterial populations have a selective growth advantage and proliferate while the others die out. Inappropriate use or misuse …

Mixed mechanisms

Mixed mechanisms Resistance genes can be mobilized within or between bacterial cells using a combination of mechanisms previously explained. A particular resistance gene can be flanked by a transposon allowing …

What are the Mechanisms of Antimicrobial Resistance?

Overview In addition to the intrinsic mechanisms of resistance, bacterial pathogens can acquire genes and mutations that mediate resistance to antibiotics. In some cases, bacteria may acquire multiple mechanisms of …

Intrinsic resistance

Overview Intrinsic resistance is when a bacterial species is naturally resistant to a certain antibiotic or family of antibiotics, without the need for mutation or gain of further genes. This …

How do antibiotics work?

You have a bacterial infection and are prescribed an antibiotic by a doctor. Within a few days you begin to feel better. But how do antibiotics work? In broad terms …

What are antibiotics?

Antibiotics – the basics You may have heard both the terms “antimicrobial” and “antibiotic”. Although often used interchangeably, they actually have distinct meanings: Antimicrobial: is any substance that kills or …

Comparing the genotype and phenotype

When comparing the phenotypic drug susceptibility results to the genomic determinants identified, there could be some cases with discrepancies. These can occur because of the following reasons: 1. Phenotype sensitive …

AST method

Principles of the procedure The aim of this procedure is to determine if bacteria are susceptible or resistant to a range of different antibiotics. This is done by plating a …

What is the problem?

In this video, Professor Sally Davies talks about how big the problem of antimicrobial resistance is, and what are the strategies to tackle it

Interview with Dr Estée Török

In this video, Dr. Estée Török talks about her work on translating microbial sequencing from a research tool into clinical practise. Her particular interest is the antimicrobial resistance and health …

Introduction to phylogenetic trees

What are phylogenetic trees? A phylogeny, also known as phylogenetic tree, depicts estimated evolutionary relationships between taxa – these can be species, strains or even genes. In the context of …

Introduction to Microreact

In this video, you will learn how to use Microreact, a free web tool developed by the Centre for Genomic Pathogen Surveillance at the Wellcome Genome Campus.

Learning together

Your learning You will learn by watching videos, reading articles and publications, doing exercises, checking your understanding in the quizzes and the final test, and through discussion with other learners. …