Term
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Definition
Bio: Gram (+); Catalase (-); B-hemolytic;bacitracin sensitive
Virulence: M protein; Streptolysins S and O; Pyrogenic exotoxins (superantigen); streptokinase; Lipoteichoic acid
Pathology: Spread by respiratory droplets (upper resp); Pharyngitis; Scarlet fever rash; Skin infection (pus forming); Lymph enlargement; toxic shock syndrome; Rheumetic fever; glomerulonephritis; necrotizing fascilitis
Treatment: Penicillin; allergic alternatives are cephalosporin or vancomycin
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Term
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Definition
Bio: Gram (+); Catalase (-); Diplococci (lancet shaped) chain; Facultative anaerobe; a-hemolytic; optichan sensitive; bile soluble
Virulence: Polysacch. capsule (Quellung reaction for ID); IgA protease
Pathology: most common pneumonia; colonize oropharyngeal; meningitis; asplenia patients at higher risk;
Treatment: Penicillin; amoxicillin/vancomycin for resistant strains; vaccine for children + asplenic patients |
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Term
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Definition
Bio: Gram (+), cluster cocci; Catalase (+); Coagulase (+); facultative anaerobe; B-hemolytic; gold pigment
Virulence: capsule; Protein A; Coagulase; Hemolysins; Leukocidin; Penicillinase; Lipases; Fibrinolysin; Exfolatin; Enterotoxins; Toxic Shock (superantigen)
Pathology: Gastroenteritis; N&V; non-bloody Diarrhea; Toxic Shock Synd; Scalded skin (peeling baby); Pneumonia; Acute Endocarditis; Osteomyelitis; septic arthritis
Treatment: Oxacillin; vancomycin |
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Term
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Definition
Bio: Gram (+), cluster cocci; Catalase (+); Coagulase (-); facultative anaerobe
Virulence: Biofilm
Path: Bacteremia; Endocarditis; Wound infection from catheters/surgery/mechanical prosthesis; UTI; normal outer skin flora
Treatment: Vancomycin |
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Term
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Definition
Bio: Gram (+); Endospore (honey/soil); Rod; Obligate Anaerobe;
Virulence: heat-labile A-B neurotoxin inhibiting ACh release at NMJ; motile flagella
Path: Foodborne- cranial nerve palsy, resp. paralysis, flaccid paralysis; Infant- floppy baby syndrome; Wound botulism
Treat: Antitoxin (polyclonal Ab from horse); Penicillin |
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Term
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Definition
Bio: Gram (+) rod; Obligate Anaerobe; Spore-forming (soil); non-motile
Virulence: a-toxin (lecithinase) necrotize tissue
Path: Gas Gangrene (clostridial myonecrosis); necrotizing enteritis causing bloody diarrhea & vomitting
Treat: debridement, high-dose penicillin, hyperbaric O2 |
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Term
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Definition
Bio: Gram (+) rod; Obligate Anaerobe; spores in soil
Virulence: Tetanus toxin- prevents GABA and glycine release; motile flagella
Path: severe muscle contractions; lock jaw
Treat: Penicillin; Metronidazole; tetanus vaccine booster; antitetanus immune globulin |
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Term
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Definition
Bio: Gram (+) spore rod; Obligate Anaerobe; difficult to isolate and grow
Virulence: Toxin A (cytotoxin) secretory diarrhea; Toxin B (enterotoxin) neutrophil+cytokine stimulation; Motile flagella
Path: antibiotic-associated colitis; common in hospitalized patients on broad antibiotics
Treat: Oral Metronidazole or Vancomycin |
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Term
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Definition
Bio: Gram (+) spore rod; Sheep/Goat fur
Virulence: polypeptide capsule; exotoxins- Edema toxin-adenylate cyclase, lethal toxin-zinc metalloprotease; protective antigen
Path: cutaneous anthrax (black ulceration and central necrosis); inhalation anthrax (massively enlarged mediastinal lymph nodes --> pulmonary hemorrhage)
Treat: Ciprofloxacin; vaccinate animals |
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Term
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Definition
Bio: Gram (+) spore rod; Rice dishes;
Virulence: Heat-stable entertoxin-emesis; Heat-labile enterotoxin- diarrhea; Motile; Ocular- cereolysin, phospholipase C, necrotic toxin
Path: Diarrhea + vomiting, gastroenteritis; ocular infection after trauma
Treat: resolves itself |
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Term
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Definition
Bio: Gram (-) rod; Facultative anaerobe; Black Plague
Virulence: LPS O-antigen; Lipid A; Capsule Polysacch.; non-motile
Path: spread by flea; Bubonic swelling a lymphs; high fever; sepsis; Conjunctivitis
Treat: Streptomycin; Gentamicin; Doxycycline |
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Term
E. coli
Enteropathogenic (EPEC) |
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Definition
Bio: Gram (-) rod; Lactose fermenter (purple MacConkeys); H2S production; aerobic
Virulence: LPS; O-antigen; Lipid A; non-motile
Path: infants; watery diarrhea; colony formation on small intestinal epithelium --> microvilli loss (decr. absorption)
Treat: symptomatically |
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Term
E. coli
Enterotoxigenic (ETEC) |
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Definition
Bio: Gram (-) rod; Lactose fermenter (purple MacConkeys); H2S production; aerobic
Virulence: LPS; O-antigen; Lipid A; non-motile
Path: small intestine; enterotoxins incr. cAMP/cGMP --> fluid and electrolyte loss; watery diarrhea and low grade fever (traveler's diarrhea); contaminated water
Treat: symptomatically
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Term
E. coli
Enteroinvasive (EIEC) |
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Definition
Bio: Gram (-) rod; Lactose fermenter (purple MacConkeys); H2S production; aerobic
Virulence: LPS; O-antigen; Lipid A; non-motile; shares Shingella virulence factors
Path: Large intestine; BLOODY diarrhea with pus, fever, dysentery; invade enterocytes destroying epith. lining causing inflammation and colitis
Treat: symptomatically |
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Term
E. coli
Enterohemorrhagic (EHEC) O157:H7 |
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Definition
Bio: Gram (-) rod; Lactose fermenter (purple MacConkeys); H2S production; aerobic
Virulence: LPS; O-antigen; Lipid A; non-motile;
Path: Large intestine; watery --> bloody diarrhea; NO fever; hemolytic-uremic syndrome (HUS); Shiga toxin inhibit protein synth.
Treat: Symptomatically |
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Term
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Definition
Bio: Gram (-) rod; non-lactose fermenter; non-motile; no H2S produce; Oxidase (-)
Virulence: O-antigen; K-antigen (capsule); H-antigen (flagellum); Shiga toxin; adherence
Path: AB toxin on Peyer's patches, watery --> bloody diarrhea; daycares; human only reservoir; low inoculum
Treat: Fluoroquinolone or TMP-SMX azithromycine |
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Term
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Definition
Bio: Gram (-) rod; non-lactose fermenter; oxidase (-); motile; H2S producer
Virulence: multiple flagella; adhesion fimbriae for gut M protein; LPS; capsule
Path: non-bloody diarrhea; Vi antigen (polysach. capsule); travel in macrophage outside of intestines --> typhoid fever (mimic appendicitis, rose spots, splenomegaly); contaminated eggs, poultry, dairy products
Treat: TMP-SMX fluoroquinolones, ceftriaxone |
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Term
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Definition
Bio: Gram (-) thin rod; Non-lactose ferment; Oxidase (+); Obligate aerobe; blue-green pigment; motile; biofilm; fruity smell
Virulence: capsule, LPS, Exotoxin A (elongation factor EF-2, protein synth.); alkaline protease; flagella; antibiotic resistance
Path: BE PSEUDO- Burns, Endocarditis, Pneumonia, Sepsis, External malign. otitis, UTI, Diabetic osteomyelitis; co-colonize with S. aureus in cystic fibrosis
Treat: combination therapy |
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Term
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Definition
Bio: Gram (-) diplococci; Oxidase (+); Glucose + Maltose metabolizer; obligate aerobe;
Virulence: Pili; Por proteins (pores); Opa proteins (adhesion); LOS (lipo-oligosach.); IgA proteases; Siderophores (collect iron)
Path: Most cause of meningitis (stiff neck, fever, chills); meningococcemia (sepsis) purpuric rash; Waterhouse-Friderichsen synd. (hemorrhage adrenal glands); respiratory droplets; antiphag. polysach. capsule
Treat: Penicillin; Rifampin (prophylaxis)
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Term
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Definition
Bio: Gram (-) diplococci; Oxidase (+); Maltose nonfermenter; obligate aerobe; No capsule; Thayer-Martin medium (chocolate agar)
Virulence: Pili; Por proteins (pores); Opa proteins (adhesion); LOS (lipo-oligosach.); IgA proteases; Siderophores (collect iron)
Path: gonorrhea; urethritis (males); cervicitis (female); gonococcal pharyngitis (uncommon); pelvic inflammatory disease (infertility, ectopic pregnancy); septic arthritis; neonatal gonococcal ophthalmia
Treat: ceftriaxone, azithromycin +tetracyclin+doxycycline if co-chlamydia infection |
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Term
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Definition
Bio: Gram insensitive; large virus size (small); NO cell wall; Sterol containing; Facultative anaerobe; slow growin; cold agglutinin test; fried egg culture appearance
Virulence: P1 protein (resp. spec. epith. binding);
Path: Atypical "walking" pneumonia; low fever; hacking non-producing cough; patchy bilateral infiltrates in chest radiographs
Treat: tetracyclins, macrolides, 4th gen. fluoroquinolones |
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Term
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Definition
Bio:Gram (-) but so small; Obligate Intracellular (do not produce ATP);
Virulence: intracellular growth; replication in endothelial cells
Path: Louse-borne vector; epidemic typhus (rash and fever); vasculitis
Treat: Tetracyclin, Doxycycline |
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Term
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Definition
Bio:Gram (-) but so small; Obligate Intracellular (do not produce ATP);
Virulence: intracellular growth; replication in endothelial cells
Path: Rocky Mountain spotted fever; Tick-borne; rash on palms and soles
Treatment: Doxycycline |
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Term
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Definition
Bio: Small intracellular (requires host ATP); Gram (-); no peptidylglycan layer (no cell wall); iodine stain
Virulence: Elementary body (EB) coat; Reticulate body (RB) is replicative form; lysozyme resistant
Path: EB ingest into (columnar or transitional epith) cell, RB replicate by binary fission, back to EB before release; neonatal conjunctivitis; trachoma (rough eye); STD: non-gonococcal urethritis; Reiter's syndrome (conjunctivitis, arthritis, urithritis)
Treat: Doxycycline; Azithromycin |
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Term
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Definition
Bio: Small intracellular (requires host ATP); Gram (-); no peptidylglycan layer (no cell wall); iodine stain
Virulence: Elementary body (EB) coat; Reticulate body (RB) is replicative form; lysozyme resistant
Path: Pharyngitis; Bronchitis; Pneumonia; Sinusitis; can cause coronary artery disease
Treat: Doxycycline; Erythromycin; Azithromycin |
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Term
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Definition
Bio: Small intracellular (requires host ATP); Gram (-); no peptidylglycan layer (no cell wall); iodine stain;Parrot pneumonia
Virulence: Elementary body (EB) coat; Reticulate body (RB) is replicative form; lysozyme resistant
Path: Respiratory infection; pulmonary distress; malaise
Treat: Doxycycline; Erythromycin; Azithromycin |
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Term
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Definition
Bio: spirochete shaped; Gram (-) but small; obligate anaerobe (unculturable); FTA-ABS treponemal test
Virulence: Hyaluronidase; adherenche; immunopathogenesis
Path: Syphylis; Primary-painless ulcer (chancre); 2nd- flu, rash, hepatitis; tertiary- neurosyphylis, gumma
Treat: penicillin |
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Term
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Definition
Bio: Gram (-) spirochete; motile; darkfield microscopy
Virulence: Endotoxin; relapsing fever (antigenic shift); immunopathogenesis
Path: Lyme disease, erythema migrans (bulls eye), flulike symptoms, swollen glands, musculoskeletal pain, neurological problems (meningitis, encephalitis), cardiac dysfunction, arthritis
Treat: doxycyclin, amoxicillin (early), ceftriaxone (late) |
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Term
Mycobacteria tuberculosis |
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Definition
Bio: Acid-fast stains; lipid (wax) mycosides in cell wall; obligate aerobe; reside in macrophage; "red snappers"
Virulence: waxy outer layer; intracellular growth; cord factor
Path: pulmonary TB, infect alveolar macrophages; caseous granulomas b/c inhibit lysosome fusion; Ghon complex (large perihilar lymphs adjacent to granulomas); prefers apices of lungs (aerated); secondary TB from granulomas; immunosuppressed ptn
Treat: purified protein derivative (PPD test) (BCG vaccine false-positives); Isoniazid; rifampin; multidrug therapy |
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Term
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Definition
Bio: acid-fast, rod; aerobe; Wax coat (no complement); high lipid cell wall; Armadillo
Virulence: intracellular growth; neurotropism
Path: leprosy, peripheral nerve and sensory damage, foamy macrophages, TH2; Th1- granulomas with langerhans cells
Treat: dapsone and rifampin |
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Term
Mycobacterium avium complex |
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Definition
Bio: acid-fast, rod; aerobe; Wax coat (no complement); high lipid cell wall;
Virulence: intracellular growth, neurotropism
Path: pulmonary and disseminated disease in AIDs patients
Treat: clarithromycin + ethambutol + rifabutin |
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Term
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Definition
Bio: Gram (-); common (S) shaped rod; Oxidase (+); requires salt to grow
Virulence: Cholera (AB toxin) A-toxin increase cAMP increase ion and water secretion; single polar flagellum;
Path: rice-water diarrhea; shellfish; extreme dehydration; sunken eyes
Treat: fluids and electrolytes; doxycycline |
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Term
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Definition
Bio: Gram (-) rod; Aerobic; catalase (+); cysteine and iron for growth; AC coolant
Virulence: Capsule; growth in macrophage; secrete phospholipase A
Path: Pontiac fever (flulike); pneumonia
Treat: erythromycin and rifampin
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Term
Facultative Intracellular Microbes |
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Definition
Salmonella
Neisseria
Brucella
Mycobacterium
Listeria
Francisella
Legionella
Yersinia
"Some Nasty Bugs May Live FacultativeLY" |
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Term
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Definition
Actinomyces
Bacteroides
Clostridium
lack catalase or superoxide dismutase
"Anaerobes know their ABCs" |
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Term
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Definition
Nocardia
Pseudomonas aeruginosa
Mycobacterium tuberculosis
Bacillus
"Nagging Pests Must Breathe" |
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Term
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Definition
N. gonorrhoeae - Thayer-Martin
M. tuberculosis - Lowenstein-Jensen
Lactose fermenters - MacConkey (turns pink)
Legionella - Charcoal yeast |
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Term
Obligate Intracellular Microbes |
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Definition
Rickettsia
Chlamydia
must use host ATP, have ADP/ATP translocator |
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Term
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Definition
Pseudomonas - if diabetic
Salmonella typhi - sickle cell
Staphylococcus aureus |
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Term
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Definition
(+) Quellung reaction
Strep. pneumoniae
B. anthracis
H. influenzae
N. meninigitidis
Klebsiella pneumoniae
S. typhi
E. coli
Pseudomonas |
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Term
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Definition
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Term
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Definition
Dental infections, endocarditis, a-hemolytic, optichan resistant |
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