55 results
Tuberculosis Testing

LATENT TB
• LTBI is diagnosed when an asymptomatic patient has a positive TST or IGRA
Tuberculosis Testing ... (TST) False-negative ... because false-negative ... sample = 95% • A negative ... #InfectiousDiseases
Strongyloides fuelleborni Lifecycle
Free-Living Cycle
1) Eggs containing rhabditiform larvae passed in feces.
2) Rhabditiform larvae hatch in environment.
Strongyloides fuelleborni Lifecycle ... Parasitic Cycle ... #fuelleborni #LifeCycle ... #Parasite #diagnosis ... pathophysiology #infectiousdiseases
Life Cycle of the Malaria Parasite

#Malaria #Parasite #LifeCycle #InfectiousDiseases
of the Malaria Parasite ... #Malaria #Parasite ... #LifeCycle #InfectiousDiseases
Microorganisms Responsible for Infective Endocarditis

Native valves:
 - Streptococcus viridans 
 - Enterococci 
 - Other streptococci
Endocarditis Native ... epidermidis - Gram-negative ... ) - Culture negative ... Enterococci - Gram-negative ... #Differential #InfectiousDiseases
Causes of Culture Negative Abscess - Differential Diagnosis Framework
Consider prior antibiotics as a cause of a
Causes of Culture Negative ... as a cause of a negative ... endemic fungi - Parasitic ... Blastomycosis - Parasite ... Differential #Diagnosis #InfectiousDiseases
Strongyloides Stercoralis Lifecycle
Free-Living Cycle:
1) Rhabditiform larvae in the intestine are excreted in stool. 
2) Development into
Strongyloides Stercoralis Lifecycle ... Parasitic Cycle: ... #stercoralis #LifeCycle ... pathophysiology #infectiousdiseases ... #cdc #parasite
Echinococcus Life Cycle
1) Adult in small intestine eggs
2) Embryonated egg in feces
3) Oncosphere hatches; penetrates intestinal
#Echinococcus #LifeCycle ... pathophysiology #infectiousdiseases ... #cdc #parasite
The Spectrum of Tuberculosis

As shown in the graphic from our Primer, exposure to M. tuberculosis can
memory, can have negative ... ‏ #Diagnosis #InfectiousDiseases ... #Tuberculosis #Testing ... #Subclinical #Active
Leishmaniasis Life Cycle
1) Sandfly takes a blood meal (injects promastigote stage into the skin)
Human Stages:
2) Promastigotes
Leishmaniasis #LifeCycle ... pathophysiology #infectiousdiseases ... #cdc #parasite
Malaria - Plasmodium Life Cycle
1) Mosquito takes a blood meal (injects sporozoites)
Human Liver Stages
2) Infected liver
Malaria #Plasmodium #lifecycle ... pathophysiology #infectiousdiseases ... #cdc #parasite