Haemophilus Flashcards
what bacteria family is pleiomorphic
pasteurellaceae
are pasteurellaceae gram neg or pos organisms? shape?
gram neg rods or coccobacilli
what kind of respiration do pasteurellaceae do
facultative anarobes
t or f: pasteurellaceae organisms are easy to grow
F
what is the most clinically important genus in the pasteurellaceae family
haemophilus
what haemophilus is the most common
H. influenzae
what haemophilus is rare
H. parainfluenzae
what are the growth factors that haemophilus require
X factor/hemin or v factor/NAD
what kind of media does haemophilus grow on
chocolate
what part of haemophilus has endotoxin activity
LPS
what differentiates different haemophilus species
outer mmb proteins
what do haemphilus use for adhesion
pili and non-pills structures
are encapsulated or non capsulated haemphilus more pathogenic
Encapsulated
how are encapsulated haemphilus organized
A through F
what is the most virulent encapsulated haemphilus
H. influenze type B (HiB)
what does the HiB vaccine target
PRP capsule
who benefits the most from the HiB vaccine
kids
do more encapsulated or non-capsule haemophilus cause more disease and why
non-capsulated b/c of the HiB vaccine
where do non encapsulated haemophilus colonize the body
respiratory tract
what haemophilus species colonize the mouth
H. parainfluenzae
where do endogenous infections of haemophilus come from
oropharynx
what haemophilus causes chancroid
H. ducreyi
how is H. ducreyi spread
sex
what part of the body is aggregatibacter apart the normal healthy microbiome
mouth
what organism is extremely sticky
aggregatibacter
what organism? pt with endocarditis caused by bacteria spreading from mouth into blood
aggregatibacter
T or F: aggregatibacter can grow on glass
T
what organism causes localized aggressive periodontitis and human bite wound infections
A. actinomycetemcomitans
where is pasteurella a commensalist
oropharynx
what causes a human pasteurella infection
animal bite or scratch
what makes up the pasteurella polysaccharide capsule
hyaluronic acid
what antibiotic works on pasteurella
penicillin
