Antibiotic resistance

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

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Klebsiella aerogenes colony morphology on CLED agar after 24 hours of incubation

Introduction Klebsiella aerogenes (formerly Enterobacter aerogenes) is an opportunistic Gram-negative, facultative anaerobic bacterium responsible for serious healthcare-associated infections (HAIs), including bloodstream infections and pneumonia. It is highly associated with antibiotic resistance (including XDR strains) and poor clinical outcomes.  Morphology Pathogenicity & Virulence Factors Lab Diagnosis Treatment Prevention Keynotes …

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Mycobacterium tuberculosis complex (MTBC): Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

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Mycobacterium tuberculosis complex grow on MGIT having modified Middlebrook 7H9 broth with PANTA supplement after 13 days of incubation

Introduction The Mycobacterium tuberculosis complex (MTBC) is a group of genetically related bacterial species that cause tuberculosis (TB) in humans and various animals. While Mycobacterium tuberculosis (sensu stricto) is the primary cause of human tuberculosis, the complex includes several other species with distinct host preferences and geographic distributions.  Morphology …

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Mycobacterium fortuitum : Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

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Mycobacterium fortuitum growth on modified Middlebrook 7H9 broth with PANTA supplement after 3 days of incubation

Introduction Mycobacterium fortuitum is a rapidly growing, nontuberculous mycobacterium (NTM). It is found ubiquitously in the environment, primarily associated with skin, soft tissue, and post-surgical wound infections. As an opportunistic pathogen that is known for its ability to grow within 7 days, it often causes infections …

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Vancomycin-Resistant Enterococcus faecium (VREfm)-Introduction, Detection Methods, and Keynotes

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Vancomycin-Resistant Enterococcus faecium (VREfm) colony morphology on CLED agar-Uropathogen

Introduction of Vancomycin-Resistant Enterococcus faecium (VREfm) Enterococcus faecium is a gram-positive, facultative anaerobic coccus that is part of the normal gastrointestinal flora but can cause nosocomial infections such as bloodstream infections, urinary tract infections, and intra-abdominal abscesses. Vancomycin-resistant Enterococcus faecium (VREfm) is defined as an isolate that harbors van …

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Acinetobacter baumannii-Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

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Acinetobacter baumannii in Gram staining of sputum

Introduction Acinetobacter baumannii is a Gram-negative, non-fermenting, aerobic coccobacillus. It is an opportunistic pathogen increasingly associated with nosocomial infections, particularly in critically ill or immunocompromised patients. Notorious for its antibiotic resistance, it has become a major global health concern, particularly in ICU settings. Morphology Pathogenicity …

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Group D streptococci: Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

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Gram positive cocci in singles, pairs, and chains of Group D streptococci

Introduction Group D streptococci constitute a diverse group of bacteria found in humans. Furthermore, they inhabit the gastrointestinal tract reliably. They reside in the female genital tract, too. Moreover, they play a role in opportunistic infections frequently. They cause endocarditis in some patients. Additionally, they …

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MDR ESKAPE-Introduction, Group of Pathogens, Clinical Importance, and Keynotes

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Mucoid -lactose fermenting (MLF) colony of Klebsiella pneumonie on MacConkey agar of blood culture

Introduction MDR ESKAPE refers to a group of bacteria that resist multiple antibiotics. Firstly, these pathogens escape the effects of standard treatments. Moreover, they spread easily in healthcare settings. Additionally, they cause serious hospital-acquired infections. Consequently, clinicians face challenges treating these infections. Furthermore, MDR ESKAPE …

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Staphylococcus sciuri- Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

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Staphylococcus sciuri Gram positive cocci in singles, pairs, chains and clusters in Gram stain of culture microscopic examination

Introduction Staphylococcus sciuri belongs to the coagulase-negative staphylococci (CoNS) group. Since it thrives in diverse environments, scientists often isolate it from animals, soil, and water. Moreover, it colonizes the skin and mucosal surfaces of humans and animals. Although it usually remains harmless, it can cause …

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