microb Flashcards
organism: steatorrhea + travel hx
giardia (parasite)
treatment: steatorrhea + travel hx
metronidazole (anaerobic bacteria, protozoa)
organism: food poisoning + guillain-barre syndrome
campylobacter jejuni
organism: GE on cruise ship
norovirus
treatment: post-antibiotic infection
PO vancomycin or PO metronidazole (CDAD)
organism: post-antibiotic infection
CDAD
organism: diarrhoea among kids
rotavirus
organism: diarrhoea 1 month after shellfish ingestion
hep A
organism: mastitis in first time mother
staph aureus
finger lesions with serous exudate?
HSV1 {vs staphylococcal whitlow with purulent exudate)
*healthcare workers are at risk of whitlow
“owl’s eye” inclusions
CMV (cytomegalovirus) or hodgkin lymphoma
infectious mononucleosis syndrome
EBV classically (CMV also can)
how to distinguish infectious mononucleosis between EBV and CMV
EBV has heterophile antibodies
use the Paul-Bunnell test
Do NOT give ___ for EBV infection?
ampicillin (will make rash worse)
shingles pathogenesis (impt)
- reactivate latent VZV in sensory ganglia after 1º chicken pox
- virus travels along sensory axons from sensory ganglia = dermatoic distribution
- more severe if cranial dermatome distribution aka opthalmic zoster
HHV8 is aka
Kaposi’s sarcoma
incubation period of hep B
120 days
incubation period of hep A
30 days
bacteria endemic to soil in tropical rainy areas
burkholderia pseudomallei (mimics tb, but causes melioidosis instead)
post-exposure prophylaxis for hiv
2 NRTIs (but not lamivudine and emtricitabine together) + integrase/protease inhibitor OR non-NRTI
- within 72 hours
- daily for 28 days
pre-exposure prophylaxis for hiv
truvada - tenofovir + emtricitaine (2 NRTIs)
- take till 4 weeks after exposure is over
what infection assoc with ectopic pregnancy
chlamydia trachomatis
who has highest incidence of invasive strep pneumo
children under one year (CAP)
most common cause of hospital assoc UTI
pseudomonas aeruginosa
positive dark field microscopy
syphilis (treponema pallidum)
treatment of syphilis
pen G
hutchinson’s triad
eyes, ears, teeth
- interstitial keratitis
- sensorineural deafness
- hutchinson’s teeth
treatment for strep pyogenes
penicillin for 10 days (+ clindamycin + IVIG + debridement for necrotising fasciitis, use pen G for cellulitis)
vibrio cholerae treatment
doxycycline
what organism likely causes pyelonephritis
E. coli > proteus > klebsiella
splenectomy predisposes to what infection
strep pneumo, neisseria meningitidis
first line treatment for PAE
pip-tazo
organism: foul, yellow-green vaginal discharge, discharge, dysuria (in men also)
trichomonas vaginalis (parasite)
virus most assoc with transplant patients
cmv
cmv treatment
ganciclovir
bulls-eye rash
lyme disease (borrelia burgdoferi)
treatment: rickettsia rickettsi (rocky mountain spotted fever)
doxycycline
