Difference between revisions of "Protozoa Flashcards"

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==<font color="purple">Coccidia</font>==
 
==<font color="purple">Coccidia</font>==
 
==<font color="purple">Cryptosporidia</font>==
 
==<font color="purple">Cryptosporidia</font>==
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{| border="3" cellpadding="8"
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!width="400"|'''Question'''
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!width="400"|'''Answer'''
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!width="150"|'''Article'''
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|-
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|<big>'''What is the main species of ''Cryptosporidium'' which infects humans and domestic animals?'''
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||<font color="white"> <big>
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*'''''C. parvum'''''
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||[[Cryptosporidium#Recognition|<span title="Answer article">Link to Answer Article</span>]]
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|-
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|<big>'''True or False: In ''Cryptosporidium'' infections unsporulated oocysts are passed in the faeces'''
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||<font color="white"> <big>
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*'''''False'''''
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*'''''Sporulated oocysts are passed in the faeces'''''
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||[[Cryptosporidium#Life Cycle|<span title="Answer article">Link to Answer Article</span>]]
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|-
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|<big>'''How are ''Cryptosporidium'' infections passed between hosts?'''
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||<font color="white"> <big>
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*'''''Direct faecal-oral transmission'''''
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*'''''Water-bourne infections'''''
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*'''''Autoinfection can also occur'''''
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||[[Cryptosporidium#Epidemiology|<span title="Answer article">Link to Answer Article</span>]]
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|-
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|<big>'''How are ''Cryptosporidium'' infections prevented?'''
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||<font color="white"> <big>
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*'''''Isolate and quarantine brought in calves'''''
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*'''''Good hygiene and adequate disinfection of calf pens'''''
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*'''''Goog hygiene of humans working and visiting farms'''''
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*'''''Halofuginone and other drug treatments'''''
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||[[Cryptosporidium#Control|<span title="Answer article">Link to Answer Article</span>]]
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|}
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==<font color="purple">Giardia</font>==
 
==<font color="purple">Giardia</font>==
 
{| border="3" cellpadding="8"
 
{| border="3" cellpadding="8"

Revision as of 16:49, 7 January 2009

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PROTOZOA
WIKIBUGS FLASHCARDS


Toxoplasma gondii - Ke Hu and John Murray

Protozoa

Question Answer Article
What are the four different ways protozoa can move?
  • Cilia
  • Flagellum
  • Pseduopodia
  • Gliding
Link to Answer Article
How do protozoa reproduce?
  • By binary fission
  • By schizogony
  • By sporogony
  • By gametogeny
Link to Answer Article
Briefly summarise the life cycle of protozoa
  • The infectious sporozoite are released from the oocyst invading epithelial tissue
  • The nucleus of the sporozoites divides forming a schizont which contains merozoites (schizogony)
  • Schizont ruptures releasing merozoites which form micro and macrogamonts in the epithelial tissue (gametogeny)
  • Microgamonts penetrate the macrogamont forming the zygote
  • The zygote forms the oocyst which is passed in the faeces
  • Sporulation occurs which makes the oocyst infectious
Link to Answer Article

Coccidia

Cryptosporidia

Question Answer Article
What is the main species of Cryptosporidium which infects humans and domestic animals?
  • C. parvum
Link to Answer Article
True or False: In Cryptosporidium infections unsporulated oocysts are passed in the faeces
  • False
  • Sporulated oocysts are passed in the faeces
Link to Answer Article
How are Cryptosporidium infections passed between hosts?
  • Direct faecal-oral transmission
  • Water-bourne infections
  • Autoinfection can also occur
Link to Answer Article
How are Cryptosporidium infections prevented?
  • Isolate and quarantine brought in calves
  • Good hygiene and adequate disinfection of calf pens
  • Goog hygiene of humans working and visiting farms
  • Halofuginone and other drug treatments
Link to Answer Article

Giardia

Question Answer Article
What is the key points of the life cycle and prepatent period of Giardia?
  • Simple life cycle
  • Direct life cycle
  • Reproduce by binary fission
  • 5-6 day prepatent period
Link to Answer Article
How do both people and animals become infected by Giardia?
  • Water bourne transmission
  • Direct faecal-oral transmission
Link to Answer Article
How would you diagnose a Giardia infection?
  • The cysts are heavy and do not float well in saturated sodium chloride solution
  • Cysts excretion is intermittent so faeces need to be collected and sampled over 3 days
  • Cyst antigen can be detected in faeces by an immunoassay
Link to Answer Article

Piroplasmida

Tissue Cyst Forming Coccidia

Tropical Protozoa

Other Important Protozoa