Gram-negative

Myroides species: Introduction, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

by
Myroides species in Gram staining of culture at a magnification of 1000X with an additional 4X camera optical zoom

 Introduction         Myroides species are emerging, opportunistic, extensively drug-resistant Gram-negative bacteria that are gaining increasing clinical attention. Formerly classified under the genus Flavobacterium, they are notorious for causing hard-to-treat nosocomial infections. Pathogenicity & Clinical Spectrum Laboratory Diagnosis Treatment & Antimicrobial Resistance Prevention & Control Keynotes Further …

Read more

Klebsiella aerogenes: Introduction, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

by
Klebsiella aerogenes growth on CLED medium after 48 hours of incubation

Introduction Klebsiella aerogenes (formerly known as Enterobacter aerogenes) is a Gram-negative, rod-shaped, motile bacterium belonging to the Enterobacteriaceae family. Whole-genome sequencing and comparative phylogenetics recently reclassified it into the genus Klebsiella because it is genetically closer to Klebsiella pneumoniae than to other Enterobacter species. It …

Read more

Acinetobacter lwoffii: Introduction, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

by
Acinetobacter lwoffii colony morphology on CLED agar

Introduction Acinetobacter lwoffii is a Gram-negative, strictly aerobic, non-motile, non-fermenting, and oxidase-negative bacterium. It belongs to the genus Acinetobacter within the family Moraxellaceae. Unlike its highly aggressive relative Acinetobacter baumannii, A. lwoffii is generally considered a commensal organism. It regularly lives as normal flora on …

Read more

Pandrug-resistant (PDR) Klebsiella pneumoniae: Introduction, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

by
Pandrug-resistant (PDR) Klebsiella pneumoniae colony morphology on CLED agar

 Introduction Pathogenicity & Virulence Factors  Laboratory Diagnosis Therapeutic Management Strategies Prevention and Infection Control Keynotes Further Readings

Pseudomonas putida: Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, and Prevention

by
Pseudomonas putida colony morphology on blood agar after 48 hours of incubation

Introduction Pseudomonas putida is a versatile, Gram-negative, rod-shaped bacterium primarily known for its bioremediation capabilities but recognized as a rare opportunistic human pathogen. Found globally in soil, water, and plant roots, it thrives in diverse environments due to its unique metabolic endurance. Morphology and Characteristics …

Read more

Serratia marcescens: Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

by
Gram-negative rods(GNRs) of Serratia marcescens at a magnification of 1000x with 8x optical zoom

Introduction Morphology Pathogenicity Lab Diagnosis Treatment Prevention Keynotes Further Readings

Sphingomonas paucimobilis-Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

by
Sphingomonas paucimobilis colony morphology on CLED agar

Introduction Sphingomonas paucimobilis (formerly classified as Pseudomonas paucimobilis) is a strictly aerobic, non-fermenting, Gram-negative bacillus. It is an environmental oligotroph found widely in soil and water systems. It serves as a stealthy opportunistic pathogen in clinical settings. It can survive in nutrient-poor conditions and form …

Read more

Acinetobacter baumannii complex-Introduction, Species in this group, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

by
Gram-negative coccobacilli (often in pairs) of Acinetobacter baumannii complex

Introduction The Acinetobacter baumannii complex (ABC) is a group of highly resilient, opportunistic Gram-negative bacteria that pose a critical threat in healthcare settings. Classified as an “ESKAPE” pathogen, it is a leading cause of severe hospital-acquired (nosocomial) infections. The World Health Organization (WHO) categorizes carbapenem-resistant …

Read more