Human Health Risk Assessment (HHRA) for Environmental Development and Transfer of Antibiotic Resistance
Overview
Authors
Affiliations
Background: Only recently has the environment been clearly implicated in the risk of antibiotic resistance to clinical outcome, but to date there have been few documented approaches to formally assess these risks.
Objective: We examined possible approaches and sought to identify research needs to enable human health risk assessments (HHRA) that focus on the role of the environment in the failure of antibiotic treatment caused by antibiotic-resistant pathogens.
Methods: The authors participated in a workshop held 4-8 March 2012 in Québec, Canada, to define the scope and objectives of an environmental assessment of antibiotic-resistance risks to human health. We focused on key elements of environmental-resistance-development "hot spots," exposure assessment (unrelated to food), and dose response to characterize risks that may improve antibiotic-resistance management options.
Discussion: Various novel aspects to traditional risk assessments were identified to enable an assessment of environmental antibiotic resistance. These include a) accounting for an added selective pressure on the environmental resistome that, over time, allows for development of antibiotic-resistant bacteria (ARB); b) identifying and describing rates of horizontal gene transfer (HGT) in the relevant environmental "hot spot" compartments; and c) modifying traditional dose-response approaches to address doses of ARB for various health outcomes and pathways.
Conclusions: We propose that environmental aspects of antibiotic-resistance development be included in the processes of any HHRA addressing ARB. Because of limited available data, a multicriteria decision analysis approach would be a useful way to undertake an HHRA of environmental antibiotic resistance that informs risk managers.
Occurrence of Antibiotic-Resistant Bacteria in Urban Surface Water Sources in Bangladesh.
Islam M, Islam M, Neela F, Hasanuzzaman A Curr Microbiol. 2025; 82(2):96.
PMID: 39833477 DOI: 10.1007/s00284-025-04082-8.
Okon E, Okocha R, Adesina B, Ehigie J, Alabi O, Bolanle A Front Antibiot. 2025; 1():1043302.
PMID: 39816413 PMC: 11732016. DOI: 10.3389/frabi.2022.1043302.
An eco-evolutionary perspective on antimicrobial resistance in the context of One Health.
Bustamante M, Mei S, Daras I, van Doorn G, Falcao Salles J, de Vos M iScience. 2025; 28(1):111534.
PMID: 39801834 PMC: 11719859. DOI: 10.1016/j.isci.2024.111534.
Makumbi J, Leareng S, Pierneef R, Makhalanyane T Microb Ecol. 2024; 87(1):150.
PMID: 39611949 PMC: 11607014. DOI: 10.1007/s00248-024-02463-3.
Bacterial isolates from drinking water river sources exhibit multi-drug resistant trait.
Popoola B, Ogwerel J, Oladipo O Environ Monit Assess. 2024; 196(11):1054.
PMID: 39404931 PMC: 11480157. DOI: 10.1007/s10661-024-13117-9.