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Nocardia – Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes
Introduction Nocardia is a genus of aerobic, gram-positive, and partially acid-fast bacteria found in soil and water. These bacteria play a significant role in the degradation of organic matter in the environment. They are known to cause opportunistic infections in humans, particularly in immunocompromised individuals. While most species are nonpathogenic, some, such as Nocardia asteroides and N. brasiliensis, are associated with nocardiosis. This disease affects the lungs, skin, and central nervous system. Furthermore, nocardiosis is often...
Proteus penneri– Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynote
Introduction Proteus penneri is a Gram-negative bacterium primarily found in soil and water. It belongs to the family Enterobacteriaceae, closely related to Proteus mirabilis. However, it differs from P. mirabilis in its biochemical behavior and antibiotic resistance. Additionally, P. penneri frequently causes infections in humans, especially urinary tract infections. This bacterium is less common than P. mirabilis, yet its clinical significance is growing. Importantly, it has shown resistance to certain antibiotics, making treatment challenging. Moreover, P....
Streptococcus gallolyticus – Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynote
Introduction Streptococcus gallolyticus is a Gram-positive bacterium often associated with infective endocarditis and colorectal cancer. It primarily colonizes the gastrointestinal tract, yet it can enter the bloodstream, leading to serious infections. Moreover, this bacterium is particularly adept at adhering to heart valves, making it a significant cause of endocarditis. In fact, patients with Streptococcus gallolyticus bacteremia often require thorough colorectal screening, as the bacterium is closely linked to malignancies in that region. Besides, its ability to...