Antimicrobial Use and Antimicrobial Resistance: A Population Perspective

The need to stem the growing problem of antimicrobial resistance has prompted multiple, sometimes conflicting, calls for changes in the use of antimicrobial agents. One source of disagreement concerns the major mechanisms by which antibiotics select resistant strains. For infections like tuberculosi...

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Main Authors: Marc Lipsitch, Matthew H. Samore
Format: Article
Language:English
Published: Centers for Disease Control and Prevention 2002-04-01
Series:Emerging Infectious Diseases
Subjects:
Online Access:https://wwwnc.cdc.gov/eid/article/8/4/01-0312_article
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author Marc Lipsitch
Matthew H. Samore
author_facet Marc Lipsitch
Matthew H. Samore
author_sort Marc Lipsitch
collection DOAJ
description The need to stem the growing problem of antimicrobial resistance has prompted multiple, sometimes conflicting, calls for changes in the use of antimicrobial agents. One source of disagreement concerns the major mechanisms by which antibiotics select resistant strains. For infections like tuberculosis, in which resistance can emerge in treated hosts through mutation, prevention of antimicrobial resistance in individual hosts is a primary method of preventing the spread of resistant organisms in the community. By contrast, for many other important resistant pathogens, such as penicillin-resistant Streptococcus pneumoniae, methicillin-resistant Staphylococcus aureus, and vancomycin-resistant Enterococcus faecium resistance is mediated by the acquisition of genes or gene fragments by horizontal transfer; resistance in the treated host is a relatively rare event. For these organisms, indirect, population-level mechanisms of selection account for the increase in the prevalence of resistance. These mechanisms can operate even when treatment has a modest, or even negative, effect on an individual host’s colonization with resistant organisms.
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spelling doaj.art-532d7455c58f4a11829d8be82635fd8b2022-12-21T18:49:29ZengCenters for Disease Control and PreventionEmerging Infectious Diseases1080-60401080-60592002-04-018434735410.3201/eid0804.010312Antimicrobial Use and Antimicrobial Resistance: A Population PerspectiveMarc LipsitchMatthew H. SamoreThe need to stem the growing problem of antimicrobial resistance has prompted multiple, sometimes conflicting, calls for changes in the use of antimicrobial agents. One source of disagreement concerns the major mechanisms by which antibiotics select resistant strains. For infections like tuberculosis, in which resistance can emerge in treated hosts through mutation, prevention of antimicrobial resistance in individual hosts is a primary method of preventing the spread of resistant organisms in the community. By contrast, for many other important resistant pathogens, such as penicillin-resistant Streptococcus pneumoniae, methicillin-resistant Staphylococcus aureus, and vancomycin-resistant Enterococcus faecium resistance is mediated by the acquisition of genes or gene fragments by horizontal transfer; resistance in the treated host is a relatively rare event. For these organisms, indirect, population-level mechanisms of selection account for the increase in the prevalence of resistance. These mechanisms can operate even when treatment has a modest, or even negative, effect on an individual host’s colonization with resistant organisms.https://wwwnc.cdc.gov/eid/article/8/4/01-0312_articleAntimicrobial resistanceecological studyepidemiologic methodsinfectious disease transmissionmathematical modelpopulation dynamics
spellingShingle Marc Lipsitch
Matthew H. Samore
Antimicrobial Use and Antimicrobial Resistance: A Population Perspective
Emerging Infectious Diseases
Antimicrobial resistance
ecological study
epidemiologic methods
infectious disease transmission
mathematical model
population dynamics
title Antimicrobial Use and Antimicrobial Resistance: A Population Perspective
title_full Antimicrobial Use and Antimicrobial Resistance: A Population Perspective
title_fullStr Antimicrobial Use and Antimicrobial Resistance: A Population Perspective
title_full_unstemmed Antimicrobial Use and Antimicrobial Resistance: A Population Perspective
title_short Antimicrobial Use and Antimicrobial Resistance: A Population Perspective
title_sort antimicrobial use and antimicrobial resistance a population perspective
topic Antimicrobial resistance
ecological study
epidemiologic methods
infectious disease transmission
mathematical model
population dynamics
url https://wwwnc.cdc.gov/eid/article/8/4/01-0312_article
work_keys_str_mv AT marclipsitch antimicrobialuseandantimicrobialresistanceapopulationperspective
AT matthewhsamore antimicrobialuseandantimicrobialresistanceapopulationperspective