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MEDICALLY IMPORTANT PHYLA OF PROTOZOA 9) The oocyst ruptures and the sporozoites migrate to the salivary glands of the mosquito, where  they are ready to infect a new host bitten by the mosquito.  In this cycle the mosquito is called the definitive host because it harbors the stage undergoing  sexual reproduction. The human is the intermediate host, because reproduction inside it is  asexual.  Malaria is diagnosed by observing blood smears for the presence of  Plasmodium.  The patient  undergoes periodic episodes of chills and fever, occurring as the merozoites are released from  red blood cells. The time period between can vary according to the species of  Plasmodium , but it  is always some multiple of 24 hours. This is timed according to fluctuations in body temperature 
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  • Fall '09
  • red blood cells, contaminated water supplies, red blood cells., Toxoplasma gondii­­­life cycle, newly recognized parasite, coli—rarely causes dysentery

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