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Introduction Haemophilus influenzae is a Gram-negative bacterium that was originally believed to be the causative agent of influenza (the flu). However, it was later discovered that H. influenzae is not related to the viral infection that causes influenza. Instead, this bacterium is known for causing …
Introduction ESBL stands for Extended-Spectrum Beta-Lactamase. It refers to a group of enzymes produced by certain types of bacteria that can break down and inactivate a broad range of antibiotics called beta-lactams. Beta-lactams include commonly used antibiotics like penicillins, cephalosporins, and carbapenems. ESBL-producing bacteria are …
Introduction The Salmonella Typhi IgM and IgG test is a serological test used to detect antibodies produced by the immune system in response to Salmonella Typhi, the bacterium responsible for causing typhoid fever. This test helps in diagnosing and confirming cases of typhoid fever, a …
Introduction Blood culture is a diagnostic test performed to detect the presence of microorganisms, such as bacteria and fungi, in the bloodstream. It is a critical tool used by healthcare providers to identify and treat bloodstream infections or septicemia, which can be life-threatening if not …
Introduction Enterobacter cloacae is a Gram-negative bacterium belonging to the Enterobacteriaceae family. It is a non-motile, facultative anaerobic, rod-shaped bacterium with a characteristic ability to ferment lactose. The name “cloacae” is derived from the Latin word “cloaca,” which means sewer or drain, indicating the bacterium’s …
Introduction Introduction: Helicobacter pylori (H. pylori) is a bacterium that colonizes the human stomach and is a major cause of various gastrointestinal disorders, including gastritis, peptic ulcers, and even gastric cancer. The discovery of H. pylori‘s role in these diseases revolutionized the field of gastroenterology …
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 …
Introduction Quorum sensing (QS) is a sophisticated cell-to-cell communication system used by bacteria to coordinate group behaviors based on the population density. It enables bacterial cells to communicate and synchronize their activities by detecting and responding to small signaling molecules called autoinducers. In quorum sensing, …