AccScience Publishing / MI / Online First / DOI: 10.36922/MI025350088
PERSPECTIVE ARTICLE

Implications of accurate pseudomonad identification for patient care, antimicrobial stewardship, and outbreak investigations

Moiz Ahmed Khan1*
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1 Departments of Clinical Laboratory and Blood Bank, and Infection Control, Tabba Heart Institute, Karachi, Sindh, Pakistan
Received: 26 August 2025 | Revised: 25 September 2025 | Accepted: 3 November 2025 | Published online: 18 November 2025
© 2025 by the Author(s). This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution 4.0 International License ( https://creativecommons.org/licenses/by/4.0/ )
Abstract

In low-resource clinical microbiology laboratories, the identification of non-fermenting, oxidase-positive Gram-negative bacilli remains a significant challenge. Due to limited diagnostic capabilities, there is a pervasive tendency to report all such organisms simply as Pseudomonas species, often implicitly considered Pseudomonas aeruginosa. This practice overlooks the vast diversity within the Pseudomonadaceae family, which includes numerous genera such as Burkholderia, Stenotrophomonas, Achromobacter, Ochrobactrum, Ralstonia, and many non-aeruginosa Pseudomonas spp. This misidentification poses serious clinical consequences, as intrinsic antibiotic resistance profiles vary dramatically across these species, leading to inappropriate therapy and treatment failure. Furthermore, it curtails effective epidemiological surveillance and source investigation during outbreaks. This paper delineates the scope of this problem, its impact on patient care and public health, and proposes a multifaceted, feasible way forward for laboratories constrained by resources. With this, the author calls for the adoption of stratified, algorithmic approaches using basic biochemical tests and enhanced training, as well as the strategic development of affordable, context-specific diagnostic solutions.

Graphical abstract
Keywords
Pseudomonads
Gram-negative bacilli
Antimicrobial resistance
Outbreak investigation
Diagnostic stewardship
Antimicrobial stewardship
Clinical microbiology
Low-resource settings
Funding
None.
Conflict of interest
The author declares no conflict of interest.
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Microbes & Immunity, Electronic ISSN: 3029-2883 Print ISSN: 3041-0886, Published by AccScience Publishing