microbio - context clues and other extras Flashcards
“Bull neck” appearance + pseudomembrane
Diphtheria
Pale, greasy, malodorous stools with malabsorption after drinking untreated stream or lake water
Giardia lamblia
19yr old man develops fever, sore throat, malaise, headache, nausea, and rash on the lower parts of both is arms and legs
Rickettsia rickettsii
Travel to Europe + tick bite + flu-like + ecchymoses + petechiae
Babesia
Travel to US (Oklahoma/Arkansas/Missouri) + wild rabbits + tabanid fly
Tularemia
Army barracks + flu like+ maculopapular rash + petechiae
Meningococcemia (n.meningitidis)
Camping + tick bite + flu like + blanching macules
Rocky Mountain spotted fever (rickettsia rickettsii)
Hemorrhagic vesicles surrounded by a rim of erythema with central necrosis or ulceration
Erythema gangrenosum (p.aeruginosa and A.hydrophila)
Trauma/post-op incision + red, hot, shiny, swollen + exquisite tenderness
Necrotizing fasciitis (group A strep)
Transplant recipients + diabetes, elderly, Cancer patients + meningismus
Bacterial meningitis ( strep.pneumoniae)
Para nasal infection + fever + nuchal rigidity + brainstem signs
Subdural empyema (microaerophilic staph and strep)
Facial or sphenoidal sinus infection + unilateral + retro-orbital headaches
Septic cavernous sinus thrombosis (staph)
Ethmoid or maxillary sinus infection + nuchal rigidity + brain stem signs
Septic thrombosis of the superior Sagittal sinus (s.pneumoniae)
Travel + fever + jaundice + bleeding + neurologic signs
Fulminant malaria (p.falciparum)
Endocarditis + injection drug users + tricuspid valve
Staph aureus
Ingestion of shellfish + flu like + hypotension + bullous lesions + leg pain
Vibrio vulnificus
Most commons presenting sign of liver abscess
Fever
Inflammatory diarrhea + poultry + raw milk
Campylobacter jejuni
Dysentery + mollusks + crustaceans
Vibrio parahemolyticus
Diarrhea+ ingestion of potato + egg salad + mayonnaise
Staph aureus
Diarrhea + fried rice ingestion + china town
Bacillus cereus
Diarrhea + beef, poultry + legumes
Clostridium perfringens
Watery diarrhea + shellfish ingestion
Vibrio cholera
Watery diarrhea + salads + cheese
ETEC
Bloody diarrhea + salami + apple juice + raw veggies
EHEC
Necrotizing fasciitis that leaked into the perineal area causing massive swelling of scrotum of penis
Fourneir’s gangrene
Puncture wound of the foot
P. aeruginosa
Indolent + culture negative + a febrile + endocarditis
Tropheryma whipplei
Diagnosis of infective endocarditis
Duke criteria
Painful genital ulcers
Chancroid
Painless genital ulcer
Primary syphilis
Child + peri orbital cellulitis + sinusitis + ear discharge
H. Influenzae
Cellulitis + exposure to fresh water
Aeromonas hydrophila
HIV + hypoxemia + CXR infiltrates
Pneumocystis jiroveci
Un pasteurized milk + cabbage
Listeria monocytogenes
Aseptic meningitis + facial diplegia
Borrelia burgdoferi
Steeple sign + croup
Parainfluenza virus
Thumbprint sign + epiglottis
H.influenzae
Unilateral/ bilateral parotid swelling + pain aggravate when drinking citrus juice
Mumps virus
Outbreaks of respiratory infections every winter
RSV
Outbreaks of respiratory infections in hospitalized infants
RSV
Making more than one type of mRNA for the same piece of DNA (virus)
Shifting the reading frame
New properties that a bacterium acquires as a result of expression of the integrated probated genes
Lysogenic conversion
Major determinant of virulence in h.influenzae
Capsule
Toxin of v.cholerae and LT enterotoxic of E. coli are similar
B subunits of the toxin bind to GM1 receptors on the host cell
Quinolones kill bacteria by
Inhibiting DNA gyrase
Confers resistance to malaria
G6PD, hemoglobin C or E
Meyers-Kouwenaar syndrome is a synonym for
Tropical pulmonary eosiophilia
Occult filariasis
Weingartner’s syndrome
