Bacteria
Paracoccus Yeei
Paracoccus yeei is an aerobic Gram-negative coccobacilli typically found in soil and brine. It appears as diplococci and may have a visible vacuole – giving an “O” shaped appearance. It may under-decolourise and appear as Gram-positive cocci. It is oxidase-positive and confused with Moraxella/Neisseria. Identification can be made using automated systems like VITEK-2 GN, MALDI-ToF and DNA […]
Turicella otitidis
The Bacteria: Turicella otitidis is an anaerobic, non-motile, pleomorphic, gram-positive bacillus – similar to coryneform but longer.It produces a convex whitish/cream-coloured non-haemolytic colony.CAMP test positiveDNase and Catalase positive.Oxidase negative. It is often misidentified as Corynebacterium by some commercial systems. See the Pinterest images here: Pathogenicity – Otitis media Turicella is a commensal of the external […]
Mechanism of resistance in Enterococcus
Enterococci are intrinsically resistant to many classes of antibiotics – like cephalosporins, Aminoglycoside (low-level resistance), macrolides, clindamycin, quinupristin-dalfopristin (E faecalis), Fusidic acid, Sulfonamide [EUCAST], which limits our options when we try to treat Enterococcal infections. Most clinical infections are caused by Enterococcus faecalis, followed by Enterococcus faecium.Other Enterococci occasionally isolated from the clinical specimen are […]