Week 7: Spirochetes to Mycobacterium Flashcards
rickettsiacaea
gram negative, pleiomorphic, non-sporulating
how are rickettsiacaea transmitted?
zoonotic (by lice, fleas, ticks)
what does rickettsiacaea cause?
rocky mountain spotted fever, typhus
what specific bacteria causes rocky mountain spotted fever?
rickettsia richettsii (transmitted by hard ticks, especially dermacentor)
what does rickettsia richettsii do?
infect endothelial cells that line BV
90% of rickettsia richettsii present with…
a rash
what bacteria causes typhus?
rickettsia typhi
what is rickettsia typhi spread by?
fleas (infected feces) but also domestic cats and opossum
bacteria that causes lyme disease
borrelia burgdorferi
lyme disease caused by…
deer tick and western black-legged tick
most antibiotic to treat lyme disease for adults, children
adults = doxycycline children = amoxicillin
how long is the antibiotic course for lyme disease?
21 days
what bacteria causes cholera?
vibrio cholera
what causes peptic ulcers?
H. pylori
H. pylori is a ____
helicobacter
what causes pontiac fever, legionnaires’ disease?
legionella pneumophilia
tiny, pleomorphic bacteria that doesn’t have a cell wall
mycoplasma
what does mycoplasma cause?
atypical pneumonia
clostridia characteristics
- gram positive
- anaerobic
- sporulating rods
- normally found in soil
- noted for production of toxins/ability form spores