midterm bacterial pathogen basics Flashcards
main mastitis pathogens
- staphylococcus aureus
- mycoplasma spp.
- streptococcus spp.
- coliforms
- trueperella pyogenes
staphylococcus aureus general characteristics
- gram pos
- coccus
- facultative anaerobe
contagious mastitis pathogens
- staphylococcus aureus(most important cause)
- mycoplasma spp. (especially M. Bovis)
- streptococcus agalactiae
gangrenous mastitis pathogens
- staphylococcus aureus
mycoplasma spp. general characteristics
- pleomorphic cells
- stain gram neg but not really gram neg (mollicute)
- lack outer membrane and cell wall
- membrane contains cholesterol
- will not grow on bld agar must grow on special media
which mycoplasma spp. cause mastitis
- mycoplasma bovis
- others?
streptococcus spp. characteristics
- gram pos
- facultative anaerobe
- coccus
- pairs or chains
streptococcus spp. catalyse test
catalayse negative
streptococcus spp. involved in mastitis
contagious: - streptococcus agalactiae enveionrmental - streptococcus dysgalactiae - streptococcus uberis (often subclinical)
environmental mastitis pathogens
- streptococcus dysgalactiae
- streptococcus uberis is (environmental mastitis)
- coliforms (Escherichia coli, Klebsiella spp, Enterobacter spp.)
causes of coliform mastitis pathogens
- escherichia coli
- klebsiella spp.
- enterobacter spp.
Coliform general characterisitcs
- gram neg
- facultative anaerobe
- bacillus
Trueparella pyogenes general characteristics
- gram pos
- bacillus or diptheroid
- facultative anaerobe
summer mastitis pathogens
- trueparella pyogenes
- streptococcus dysgalactiae
Moraxella spp. of concern
- moraxella bovis
- moraxella ovis
moraxella spp. general characteristics
- gram neg
- aerobic
- coccobacillus
streptococcus spp. of concern respiratory
- Streptococcus equi spp. equi (group c) R
- streptococcus equi spp. zooepidemicus (group c) Z
- streptococcus suis (group d) Z
- streptococcus canis (group g)
- streptococcus pneumoniae
streptococcus equi spp. zooepidemicus effects
- horse
- dog
- cat
streptococcus suis effects who
pigs
streptococcus canis effects who
- cats
- dogs
streptococcus pneumoniae effects who
- human pathogen
- non-human primates
- cats
- g. pigs
- pneumonia in other animals
members of pasteurellaceae family
- Avibacterium spp.
- Haemophilus spp.
- pasteurella spp.
- Mannheimia spp.
- bibersteinia spp.
- actinobacillus spp.
- histophilus spp.
Avibacterium spp. general characteristics
- gram negative
- bacillus
- facultative anaerobe
- require NAD and/ or heme
Haemophilus spp.
- gram negative
- bacillus
- facultative anaerobe
- require NAD and/ or heme
Pasteurella multocida general features
- gram neg
- facultative anaerobe
- coccobacillus
- bipolar staining common
- 5 capsular serotypes
- z possibilities?
Bordetella species of intrest
- Bordetella bronchiseptica Z
- Bordetella avium Z
bordetella spp. general chracteristics
- gram neg
- obligate aerobe
- coccobacillus
Mannheimia haemolytica general characteristics
- gram neg
- facultative anaerobe
- coccobacillus
- bipolar staining common
- 12 capsular serotypes
Bibersteinia trehalosi general characteristics
- gram neg
- facultative anaerobe
- coccobacillus
- bipolar staining common
Actinobacillus spp. general characteristics
- gram neg
- coccobacillus
- fac anaerobe
actinobacillus spp. of interest
- actinobacillus pleuropneumoniae
Histophilus somni general characteristics
- gram neg
- fac anaerobe
- bacillus
- often associated w/ Mannheimia haemolytica*
Rhodococcus equi general characteristics
- gram pos
- variably acid fast
- strike aerobe
- coccus or bacillus
- Z
mycoplasma spp. resp tract
birds - mycoplasma gallisepticum R - mycoplasma melegridis - mycoplasma iowae bovine - mycoplasma bovoculi - mycoplasma bovis - mycoplasma mycoidies spp. mycoides R; USDA SELECT AGENT LIST Small ruminants -mycoplasma conjunctivae goats only - mycoplasma mycoidies spp. capri - mycoplasma capricolum spp. capripneumoniae sheep - mycoplasma ovipneumoniae swine - mycoplasma hyopneumoniae feline - mycoplasma felis - mycoplasma gateae rodent - mycoplasma pulmonis
chlamydia spp. general characteristics
- small
- round
- gram neg
- obligate aerobe
- obligate intracell pathogens
chlamydia spp of interest
- chlamydia felis
- chlamydia pecorum
- chlamydia psittaci R, Z
escherichia coli general features
- gram neg
- facultative anaerobe
- bacillus
- second respiratory invader
klebsiella spp. general features
- gram neg
- facultative anaerobe
- bacillus
anaerobes general characteristics
- commensals or oropharynx
- cause pneumonia, pulmonary abscesses, pleuritis
- foul smell breath, pleural fluid, nasal discharge
anaerobes examples
- bactericides spp.
- prevotella spp.
- fusobacterium spp.
Aspergillus fumigatus general characteristics
- fungi
- mold
- septet hyphae
- repro by formation phialoconidia
- strict aerobe
aspergillosis fumigatus infections
- keratomycosis horse
- brooder pneumonia birds
- nasal aspergillosis dogs
- guttural pouch mycosis horse
- pneumonia animals with high level of exposure
nocardia spp. general chracteristics
- gram pos
- variably acid fast
- fillamentous bacillus look like fungi but are bacteria
- obligate aerobe
nocardia spp.
- nocardia asteroides
- nocardia nova
mycobacterium spp. general characteritics
- gram pos
- acid fast
- aerobe
- bacillus
- frank pathogen (not opportunist)
mycobacterium spp. of intrest
- mycobacterium tuberculosis
- mycobacterium bovis R Z
Cryptococcus spp. general characteristics
- yeast
- divide by budding
- strict aerobe
cryptococcus spp of intrest
- cyrptococcus neoformans
- cryptococcus gatti
nervous system pathogens of interest
- streptococcus suis
- listeria monocytogenes
- encephalitozoon cuniculi
- clostridium tetani
- clostridium botulinum
streptococcus suis general chracteristics
- gram pos
- facultative anaerobe
- coccus in chains
- encapsulated
- Z