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New FA Micro 8

salmonella or shigella: motile and can disseminate hematogenously? salmonella
salmonella or shigella: which is more virulent? shigella
salmonella or shigella: symptoms may be prolonged with antibiotic treatments salmonella
salmonella or shigella: animal reservoir salmonella
this is usually transmitted from pet feces, contaminated milk, or pork; outbreaks common in daycare centers yersinia enterocolitica
this can mimic Crohn's or appendicitis & can disseminate to produce lymphadenitis yersinia enterocolitica
arthritis can develop with yersinia infection in patients with what? HLA-B27
vibrio parahaemolyticus and v. vulnificus contaminated seafood
reheated rice B. cereus
meats, mayonase, custard s. aureus
reheated meat dishes c. perfringens
undercooked meat e. coli 0157:H7
poultry, meat, eggs salmonella
bloody diarrhea; comma or S-shaped organisms campylobacter
is campylobacter motile? yes
e. coli producing shiga-like toxin; can cause HUS enterohemorrhagic
day-care outbreaks, pseudoappendicitis yersinia
protazoan causing bloody diarrhea entamoeba histolytica
protaozoa causing watery diarrhea giardia, cryptosporidium (in immunocompromised)
treatment for legionella? erythromycin
UTI - urine with alkaline pH proteus - very motile - able to break down urea
pneumonia in CF pseudomonas
wound and burn infections pseudomonas
treatment for pseudomonas? amnoglycoside plus extended-spectrum penicillin (piperacillin, ticarcillin)
aerobic gram-negative rod; oxidase positive, non-lactose fermenting; pyocyanin pigment pseudomonas
hot tub folliculitis pseudomonas
pneumonia, sepsis, UTI, drug use and diabetic osteomyelitis pseudomonas
cellulitis from animal bite, cats, dogs pasteurella
dairy products, contact with animals brucella
ghon complex TB granulomas (Ghon focus) with lobar and perihilar LN involvement; reflects primary infection or exposure
mycobacterium scrofulaceum cervical lymphadenitis in kids
mycobacterium kansasii pulmonary TB-like symptoms
acid-fast bacillus that likes cold temperatures and cannot be grown in vitro mycobacterium leprae
reservoir for m. leprae in U.S.? armadillos
what does m. leprae infect? skin and superficial nerves
treatment for leprosy? long-term oral dapsone - toxicity is hemolysis and methemoglobinemia
which type of Hanson's diseaseiis worse? lepromatous worse than tuberculoid
the chlamydial petidoglycan wall is unusual in that it lacks what? muramic acid
treatment for chlamydia? erythromycin or tetracycline
cytoplasmic inclusions seen on Giemsa or fluorescent antibody-stained smear chlamydia
infection of liver capsule with RUQ pain; associated with chlamydial or gonococcal infection Fitz-Hugh-Curtis syndrome
how do the reticulate bodies of chlamydia replicate? binary fission
types A, B, and C of chlamydia Africa/Blindness/Chronic infection
types D-K of chlamydia urethritis/PID, ectopic pregnancy, neonatal pneumonia or conjunctivitis
types L1, L2, and L3 of chlamydia lymphogranuloma venereum (acute lymphadenitis - positive Frei test)
treatment for neonate after passage through chlamydia-infected birth canal? erythromycin eye drops
most common STD in U.S.? chlamydia
only spirochete that can be visualized using analine dyes (Wright's or Giemsa stan) in light microscopy borrelia
shepherd's crook-shaped spirochete leptospira
Wal's disease fatal from of leptospira infection - jaundice, bleeding, renal failure, skeletal muscle necrosis
treatment for Borrelia recurrentis? doxycycline, erythromycin
treatment for Lyme disease? doxycycline
what causes yaws? tremonema pertenue - tropical infection that is not an STD, although VDRL test is positive
what are important reservoirs for ixodes? what is required for tick life cycle? mice; deer
signs of tertiary syphilis? broad-based ataxia; positive Romberg; Charcot joints; stroke without hypertension
congenital syphilis? saber shins, saddle nose, deafness
primary syphilis? painless chancre
secondary syphilis? disseminated isease with constitutional symptoms, maculopapular rash (palms and soles), condylomata lata
VDRL positive, FTA positive? active infection
VDRL positive, FTA negative? probably false positive
VDRL negative, FTA positive? successfully treated
VDRL false positives? Viruses (mono, hepatitis), Drugs, Rheumatic fever, Rheumatic arthritis, SLE, leprosy
Created by: Asclepius



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