NEISERRIA AND MORAXELLA Flashcards
Neisseria gonorrhoeae often called
gonococci
Neisseria meningitidis often
called ___ are the primary human
pathogens of the genus
meningococci
Neisseria ___ is not considered to be
part of the normal biota and is always
pathogenic.
While Neisseria Meningitidis may be found as
a commensal inhabitant of the upper
respiratory tract of carriers, but it can also
become an invasive pathogen.
gonorrhoeae
Also known as “clap” from the French word clapoir
meaning “brothel”
gonorrhoeae
the flow of seed
gonorrhoeae
produces large amounts of extracellular
polysaccharide when grown in media containing
1% or 5% sucrose
N polysaccharea
- misidentified as N. gonorrhoeae
- Non-glucose fermenter
- Grows on SBA
- Susceptible to colistin
- The colony morphology of neisseria ___is
also similar to one of the strains of the neisseria
gonorrhoeae on chocolate aga
cinerea
yellow-pigmented Neisseria species that is
asaccharolytic
N. flavescens
q
arge, very mucoid colonies (often adhere to the
agar)
N. mucosa
- glucose, maltose and lactose fermenter
- Misidentified as N. meningitidis (glucose and
maltose fermenter only) - Neisseria ___can be misidentified as
neisseria meningitidis because of its similar
colony morphology, but take note neisseria
lactamica is slightly smaller compared with
neisseria meningitidis.
lactamica
produces large amounts of extracellular
polysaccharide when grown in media containing
1% or 5% sucrose
N. polysaccharea
dry, wrinkled, adherent, and breadcrumb-like
colonies
- the word ____ in latin means dry
sicca
“less yellow”
N. subflava
antibiotic of choice for neiserria
Cephalosporin
The eyes are coated with gonococci as the baby
passes down the birth cana
ophthalmia neonatorum
preffered swab for Neisseria gonorrhoeae
dacron or rayon swab
preffered Transport media for Neisseria gonorrhoeae
Amies medium
preferred Transport media for Neisseria gonorrhoeae
Amies medium
Middle ear effusion, nasopharynx, sinus aspirates,
sputum aspirates, or bronchial aspirates
Moraxella catarrhalis
● SBA and CAP colony morphology - smooth, opaque,
gray-to-white colonies “hockey puck” – colony remains
intact when pushed across the plate with a loop
Older colonies – “wagon-wheel” appearance
Moraxella catarrhalis
In contrast to neisseria species that have an
optimal growth temperature of 35°C to 37°C,
most strains of ___ can
tolerate lower temperatures and grow well at
28°C.
moraxella catarrhalis
Similar to neisseria species, ___ is oxidase and catalase positive.
moraxella
catarrhalis
