Card Set Information
Parasites microbiology parasite
What parasite kills the most people every year and what are the two commonest ways it kills?
malaria: plasodium (sporozoan or apicomplexa)
How does malaria evade the immune sytem and how does partial immunity ensue?
immune system evasion:
: PfEMPS with antigenic variability
developent of antibodies to multiple PfEMPS (i.e. semi-immune state)
sickle cell trait
lack of Duffy-blood-group FyFy (Western Africa) (only useful against P. falciporum)
What's the most common protozoan infection in the world? How is it acquired and how does it cause disease?
definitive host = cat
carriers = lamb/sheep, pig, mouse, (cow)
(cat) fecal oocysts
: transfusion, transplantation, lab accidents
sexual cycle occurs in cats and does not occur in humans, only asexual/schizogony cycle happens in humans
sporogenesis in cat intestine
: transplacental parasitemia infects fetus (esp. severe in 1st trimester)
tends to affect muscles most --> heart transplants
What parasites require tests usually used for tuberculosis for detection?
cryptosporidium (acid fast in stool, mycobacterium detection)