Bacteria: Basics (What each does/key points) Flashcards
E. coli
grows on MacConkey + ferments lactose
UTI, bacteremia, neonatal meningitis
**normally found in our GI tract
Shigella
grows on MacConkey + doesnt’ ferment lactose
not normally found on/in humans unless infection —— dysentery (intestine infection —- diarrhea)
Salmonella
grows on MacConkey + doesnt’ ferment lactose
intracellular pathogen that is normally not found in humans
infections - gastroenteritis, other Gi diseases
Acinetobacter
Coccobacilli
Grow on MacConkey
Commensal: aka normally don’t harm us but sometime nosocomial infections
Found in soil, water and hospitals
Pseud. aeguinosa
Makes pigments- pyocyanin
Grows in MacConkey but doesn’t ferment lactose
Opportunistic pathogen found on our skin
Haemophilus influenzae
Coccobacillus/rods
found in URT
Doesn’t grow on blood or MacConkey
Infections: ear infections, meningitis, pneumonia
Haemophilus ducreyi
Doesn’t grow on MacConkey or blood
Causes chancroid (STD)
Legionella pneumophila
Needs Fe and Cysteine supplementation to survive
Bacilli
Doesn’t grow on blood or MacConkey
Found in water and are intracellular pathogens
can cause outbreaks in hospitals but doesn’t pass via person to person transmission
Neisseria gonorrhoeae
Cocci
Doesn’t grow on blood or MacConkey
obligate pathogen that causes STD
Neisseria meningitidis
Cocci; doesn’t grow on blood or MacConkey
can cause meningitis but some people can carry and be asymptomatic
Moraxella catarrhalis
diplococci
Doesnt’ grow on MacConkey
normally found in URT
Disease: RTI, ear infection , sinusitis
S. aureus
normally found in nose, throat and skin
very virulent —- TSS, food poisoning, impetigo , endocarditis
grape like clusters
S. epidermidis
Opportunistic pathogen
Grape like clusters
Found on hospital equipment + skin
S. saprophyticus
UTI
Strep. pyogenes
Not normal flora
Strep throat, cellulitis, impetigo, flesh eating bacteria
Strep. agalactiae
Neonatal infections
can normally find in genitourinary tract
Enterococci
Has a lot of antibiotic resistance
normally found in Gi tract
Disease: UTI or abdominal infection in hospital/ nosocomial
Strep. pneumoniae
Lancet shaped
normally in URT
Diseases: bacteremia, pneumonia , ear infections
Viridans streptococcus
opportunistic/low virulence
found normally in mouth and vag
Listeria monocytogenes
Coccobacilli
can survive in low temp
Normally found in decaying animal and plant stuff
— disease in us if accidentally take in
no spores
Corynebacterium
Bacilli , no spores
low virulence except for C.diptheria (there is a vaccine for it)
Lactobacillus
no spores
in vag for pH
Bacillus anthracis
spore forming
found in herbivores (causes diseases in them)
Bacillus cereus
spore forming
found in herbivores (causes disease in them)
—- can cause food poisoning in us
