Hand hygiene

Methicillin-resistant Staphylococcus aureus (MRSA): Introduction, Morphology, Pathogenicity, Symptoms, Lab Diagnosis, Treatment, Prevention, and Keynotes

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Nasal Methicillin-resistant Staphylococcus aureus (MRSA) Carriage expressing Cefoxitin and Oxacillin Resistance on Muller-Hinton agar (MHA)

Introduction Methicillin-resistant Staphylococcus aureus, commonly known as MRSA, is a type of bacteria that has developed resistance to multiple antibiotics, including methicillin and other beta-lactam antibiotics like penicillin and cephalosporins. Staphylococcus aureus is a bacterium that can naturally colonize the skin and mucous membranes of …

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Pseudomonas aeruginosa: Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

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Pseudomonas aeruginosa non-lactose fermenting (NLF) colony and mucoid lactose fermenting colony of Klebsiella pneumoniae on MacConkey medium

Introduction Pseudomonas aeruginosa is a Gram-negative bacterium that is widely distributed in nature and is known for its versatility and adaptability. It is an opportunistic pathogen capable of causing infections in humans, particularly in individuals with weakened immune systems or underlying medical conditions. P. aeruginosa …

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Shigella sonnei: Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

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Shigella sonnei in wet mount of Tryptone soy broth microscopy

Introduction Shigella sonnei is a bacterium that is responsible for causing shigellosis, a type of bacterial infection affecting the digestive system. Shigellosis is commonly characterized by symptoms such as diarrhea, abdominal pain, fever, and occasionally, bloody stools. It is a specific serotype of the Shigella …

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Morganella: Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

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Morganella morganii Colony Morphology on CLED agar of Urine Culture

Introduction Morganella is a genus of bacteria belonging to the family Enterobacteriaceae. The genus was named after the bacteriologist John Morgan. Morganella species are gram-negative, rod-shaped bacteria that are commonly found in the environment, including soil, water, and sewage. One species of particular interest is …

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Staphylococcus lentus: Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

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Serratia ficaria on CLED Agar of Urine Culture

Introduction Staphylococcus lentus is a species of Gram-positive bacteria belonging to the genus Staphylococcus. It is classified as a coagulase-negative staphylococcus (CoNS), which means it does not produce the enzyme coagulase. CoNS are commonly found as part of the normal human skin and mucous membrane …

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