pathogen/disease buzzwords Flashcards
bark-like cough, children
parainfluenza virus
hemagglutinin, neuraminidase, many strains, winter
influenza virus
immunity not useful, 100+ serotypes, common
rhinovirus, coronavirus (common colds)
more severe in infants, respiratory distress, nosocomial
RSV
swimming pools, vaccines for military personnel, resistant to disinfectants, conjunctivitis
adenovirus
wrestlers, rugby players
herpes gladiatorum
cold sore
herpes labialis (HSV 1)
“cropping” rash, risk to unvaccinated, latency, reactivation
varicella-zoster
transplant complication, most important cause of congenital viral infection, HIV patients at risk
cytomegalovirus
jaundice, acute hepatitis, raw shellfish, vaccine, IgM
hepatitis A
acute hepatitis, underdeveloped nations, contaminated water, IgM
hepatitis E
hepatitis, antigen-antibody, vaccine, IV drug use
hepatitis B
hepatitis, coinfection
hepatitis D
coryza, cough, conjunctivitis, koplik’s spots, risk to unvaccinated, fatal pneumonia
measles
“slapped cheek” rash, arthralgias in adults
parvovirus
puffy cheeks, risk to unvaccinated
mumps
cervical cancer, high risk genotypes, warts, vaccines
HPV
paralysis, aseptic meningitis, vaccine
polio
summer cold
non-polio enteroviruses
opportunistic infections, depleted CD4 cells, high risk populations
HIV
bite wound, neurological symptoms, hydrophobia, negri bodies, death
rabies
urban and sylvatic cycles, encephalitis, arthropod vectors
arboviruses
cervical cancer/high risk genotypes (specify disease and genotypes)
HPV 16 and 18
urban and sylvatic cycles, jaundice, vaccine, hemmorhagic fever
yellow fever
bone and joint pain, hemorrhagic fever, urban transmission, mosquitos
dengue fever
- coagulase +, catalase +, pus-forming, nosocomial
- gram +
s. aureus
- coagulase -, catalase +
- implanted devices are a risk
- gram + cocci
s. epidermidis
- coagulase -, catalase +, novobiocin resistant
- UTI, cystitis
- gram +
s. saprophyticus
- catalase -, bacitracin sensitive, beta-hemolytic
- pharyngitis, cellulitis,
- post-infection sequelae
strep pyogenes
- # 1 cause neonatal meningitis
- gram + cocci, bacitracin resistant
- mother –> baby
strep agalactiae
- strawberry tongue, white coated tongue, phage infection
scarlet fever by s. pyogenes
tonsilar exudates, sore throat, malaise, fever
pharyngitis by s. pyogenes
gram + cocci, polysaccharide + conjugate vaccine, alpha hemolytic, optochin sensitive
strep pneumoniae
oral flora, optochin resistant, alpha-hemolytic, dental procedures
strep viridans
gram + cocci, catheter pts/long term hospitalization, UTI
enterococcus
deli meat/unpasteurized dairy, gram + coccobacilli, meningitis in pregnancy
listeria monocytogenes
TDaP vaccine, uncommon in US, pseudomembrane formation, toxin delivery on lysogenic phage, gram + bacilli
corynebacterium diphtheriae
mycelia, sulfur granules in culture, normal mouth flora, pus, risk with aspiration
actinomyces israelii
can view under wood’s/UV light
corynebacterium minutissimum
urease production, spirochete, gram - bacilli, ulcers
h. pylori
opportunistic, survival inside macrophages, gram + rods, filament forming
nocardia
dog bite, cellulitis at wound
pasteurella multocida, c. canimorsus
cat scratch disease
bartonella henselae
intra-abdominal infections when normal flora enters sterile sites, obligate anaerobe, gram -
bacteroides
tetanospasmin toxin, TDaP, spores, wound contamination
clostridium tetani
follicle infection, acne
propionibacterium acne
gram + bacilli, spore formers, gas gangrene, enterotoxin lyses WBCs
clostridium perfringens
antibiotic-related diarrhea, gram + blunt end bacilli, spores
c. dificile
gram + spore former, botulin toxin, improper food storage, honey
clostridium botulinum
gram - diplococci, intracellular, meningitis, dorms/prisons/schools, cross BBB, vaccine
neisseria meningitidis
otitis media, sinusitis, gram - coccobacilli
moraxella catarrhalis
intracellular gram - diplococci, urethritis, thick discolored discharge
neisseria gonorrhoeae
cysteine, BCY agar, intracellular, type IV secretion system, hot tubs/lakes
legionella pneumophila
1 cause of atypical pneumonia, toxic metabolite production, fried egg appearance
mycoplasma pneumoniae
gram - coccobacilli, whooping cough, pertussis and adenylate cyclase toxins
bordatella pertussis
intracellular gram -, urethritis, infectious blindness, infant pneumonia
chlamydia trachomatis
gram - intracellular, pneumonia, crowded conditions
chlamydia pneumoniae
intracellular gram -. 4 fold rise in titer, birds
chlamydia psittaci
gram -, burns, ICU, wet environment puncture wound, exotoxin A
p. aeruginosa
lyme disease, tick bite, intracellular, spirochete
borrella burgdorferi
syphillis, spirochete, chancre
treponema pallidum
gram - coccobacilli, chocolate agar w/ X and V, agglutination capsule test, B vs non B
haemophilus influenzae
typhus, lice, intracellular
rickettsia prowazekii
rocky mountain spotted fever, intracellular, tick bite
rickettsia rickettsii
bubonic plague, black death, survival inside APCs, fleas
yersinia pestis
gram + bacilli, spore former, bioweapon, plasmid
bacillus anthracis
skinning, butchering game, intracellular, macrophage infection, gram - rod
francisella tularensis
daycare/children, diarrhea, non lactose fermenter, gram - rod
shigella flexneri
glucose fermenter, non-lactose fermenter, gram - rod, eggs, birds
salmonella enterica
pork chitterlings, non-lactose fermenter, diarrhea, gram - rod
yersinia enterolitica
lactose and glucose fermenter, community acquired pneumonia in UTI patients, UTI in hospital, gram - rod
k. pneumoniae
microaerophilic gram -, contaminated water, diarrhea
campylobacter jejuni
gram -, sorbitol and glucose fermentation, most ferment lactose, UTI
e. coli
second most common cause of neonatal meningitis
e. coli K1
gram -, traveler’s diarrhea, enterotoxin
enterotoxigenic E. coli
gram -, beef, hemolysin, type III secretion
enterohemorrhagic e. coli
comma shaped gram -, rice water stool, brackish water, shellfish, A/B toxin
vibrio cholerae
gram - comma shaped, shellfish (oysters), brackish water
vibrio vulnificus
obligate anaerobe, acid fast stain, intracellular, tubercle formation, RIPE antibiotics
mycobacterium tuberculosis
acid fast bacilli, PPD -
m. avium complex
spaghetti and meatballs pattern in KOH stain, superficial skin only, macules
malassezia fungi
annular itchy, scaly lesion, cutaneous, tinea, KOH mount
epidermophyton, microsporum, tricophyton
adolescents/adults, wet environments, more common in men, interdigital macerations and yellow-green discoloration w/ debris
tinea pedis w/ onychomycosis
tropical, subcutaneous, splinter/thorn, black grains in biopsy
madurella mycetomatis
chestnut brown, rotten wood, cayenne pepper appearance
chromoblastomycosis
rose gardener, dimorphic at different temperatures, cigar-shaped budding, subcutaneous
sporotrichosis
opportunistic, spelunking, barn cleaning, birds/bats, narrow-based budding yeast
histoplasmosis
spherule, endemic to southwest USA, pneumonia
coccidioides
non-dimorphic, opportunistic, AIDS-defining, thrush
candida albicans
ground glass opacity, no ergosterol, pneumonia
pneumocystis jirovecii
pigeon droppings, pneumonia
cryptococcus neoformans
common mold, acute branching, hypersensitivity 1, ground glass infiltrates, fungus ball
aspergillus
right angle branching, ribbon like hyphae, diabetics, rhino-orbital-cerebral
mucormycosis
amoebic cysts, trophozoites, mexico, central america, sewage systems
entamoeba histolytica
3rd world water infection, beavers, acute vs chronic, backpackers and kayakers
giardia lamblia
poorly treated water, infectious in both forms, oocysts, sporozoites, swimming pools
cytosporum parvum
strawberry cervix, discharge, sexual contact
trichomoniasis vaginalis
mosquito, TNFa, IL-1, blood smear, symptoms every other day
malaria
amastigote, promastigote, sand fly, pentavalent treatment
leishmania
most common helminth infection in US, pinworm, perianal pruritis
enterobius vermicularis
kato-katz smear, chronic vs migratory phases, roundworm
ascaris lumbricoides
nematode, peptic ulcer-like symptoms, eosinophilia, autoinfection cycle
strongyloides stercoralis
tapered ends, terminal plugs of ova, poverty, colitis/IBD
trichuris trichiura whipworm
striated muscle, muscle cysts, triad of periorbital edema, myalgia, eosinophilia
trichinella spiralis
meat and fish handlers, microaerophile, violaceous lesion on hand/finger, pruritis, burning
erysipeloid
septic vegetations of endocardium, slower-paced, microbes rarely spread hematogenously, s. viridans
subacute endocarditis
septic vegetations of endocardium, fast paced + rapid damage, microbes spread hematogenously, febrile
acute endocarditis
adhesins adhere to bone, survival inside osteoclasts, can be hematogenous
osteomyelitis caused by S. aureus
leukocyte esterase dipstick, nitrite +, dysuria, often pyuria and proteinuria
cystitis
leukocyte esterase dipstick, flank/lumbar pain, fever, chills, nausea, pyuria
pyelonephritis
1 cause of uncomplicated community-acquired UTI
e. coli
no classic signs of cystitis, complex to diagnose
silent pyelonephritis