Bacteria
Eikenella corrodens
Bacteria: Pathogenicity: Culture and identification: Infection caused by Eikenella: Points to remember Eikenella corrodens is usually susceptible to: Non-susceptible to:
Cronobacter sakazakii: pathogen from infant formula feed
What is Cronobacter sakazakii? Cronobacter sakazakii is a gram-negative bacteria that can cause necrotising enterocolitis, septicaemia, and meningitis in infants, particularly low-birth-weight neonates. It has repeatedly been associated with reconstituted powdered infant formula. It can also cause infection in adults, especially in vulnerable groups like older people. Infection in infants is associated with a high […]
Corynebacterium macginleyi – an under-reported cause of conjunctivitis
Corynebacterium macginleyi (CM) is lipophilic, slow-growing, gram-positive bacteria first described in 1995 and was named after Kenneth McGinley, who made an essential contribution to the field of lipophilic coryneform bacteria. CM has been associated with conjunctivitis and other eye-related infections. It has also been implicated in various non-ophthalmic infections as an opportunistic pathogen. It has […]
Cardiobacterium spp (C hominis, C valvarum)
Bacteria: Microaerophilic, pleomorphic gram-negative bacillus often with swelling of one or both ends and retained crystal violet dye at the poles.It is a part of the normal flora of the nose and throat. Culture and identification: Culture API 20NE – may misidentify it as Pasteurella.MALDI ToF16s rRNA PCR Clinical presentation: Antibiotic susceptibility: Variable susceptibility: Treatment is […]
Capnocytophaga spp.
Capnocytophaga genus belongs to the family Flavobacteriaceae.There are >9 species of Capnocytophaga, which can be divided into two groups – resident of human mouth flora and dog/cat mouth flora. Species found in the human oral cavity C. gingivalis, C. granulosa, C. haemolytica, C. leadbetteri, C. ochracea and C. sputigena Species found in dog/cat oral cavity C. canimorsus and C. cynodegmi Risk factors […]
Brucella
Bacteria There are many Brucella species – not all known to cause human disease. Those known to cause human disease are – B melitensis, B abortus, B suis, B canis and B ceti. Brucella infection is a zoonosis – each Brucella sp is associated with some animal host – Brucella survives in the environment for […]
Aerococcus urinae
Aerococcus genus, a firmicute, was first identified in 1953 [Williams, 1953]. Multiple species have been identified since then; not all are human pathogens. Human pathogen Aerococcus viridans, Aerococcus urinae, Aerococcus urinae hominis,Aerococcus christensenii, (2001), Aerococcus sanguinicola. Not human pathogen Aerococcus urinae equi ( or Pediococcus urinae equi), Aerococcus suis, Aerococcus vaginalis. Laboratory identification: Aerococcus is a gram-positive coccus in clusters (like Staphylococcus), alpha-hemolytic on […]
Aeromonas spp.
Aeromonas are Gram-negative bacilli, widely distributed in nature, especially aquatic environments – freshwater, brackish water, sewage system, hospital water system, and even drinking water. It can also be found in food and domestic or farm animals. The Aeromonas genus consists of more than 30 species based on DNA-DNA hybridisation and 16S rDNA relatedness. Of these 30 […]
Actinotignum schaalii: a new pathogen
An emerging pathogen Actinotignum schaalii gram stain (pic Manurx27, Wikipedia) What infection does it cause, and who is mostly affected? How to identify Actinotignum schaalii in the lab? How do we treat infection caused by Actinotignum schaalii infection? Actinotignum schaalii presentation.(Youtube)