Gram Positive
1> Part of the normal flora of the skin, it causes infection of IV lines and catheters; it is a major cause of endocarditis in patients with prosthetic heart valves.
Staphylococcus epidermidis.
2> The second leading cause of urinary tract infection in sexually active women.
Staphylococcus saprophyticus.
3> Infection can lead to the development of acute glomerulonephritis and mitral and aortic stenosis.
Streptococcus pyogenes.
4> The organism is detected as PAS+ rods within the macrophages of the lamina propria of the small intestine.
Tropheryma whippelii ( causative agent of Whipple's disease)
5> As well as being gram positive, this organism is also weakly acid fast and causes a pneumonia predominantly in immunocompromised patients.
Nocardia asteroides.
6> Can cause risus sadonicus, the characteristic grimace of lockjaw.
Clostridium tetani
7> A common cause of nosocomial infections, this organism is often resisitant to many antibiotics, including vancomycin.
Enterococcus spp.
8> Causes a fishy smelling vaginal discharge.
Gardnerella vaginalis. (histologically charaterised by the presence of "clue cells", vaginal epithelial cells covered with bacteria, seen on Pap smear).
9> This cause of late onset neonatal sepsis is a facultative intracellular parasite that spreads from cell to cell via actin rockets.
Listeria monocytogenes. (this organism can be detected as short non-spore-forming rods with a tumbling end-over-end motility).
10> Causes gastroenteritis and is typically associated with the consumption of reheated rice.
Bacillus cereus.
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