Sumitomo Chemical - Global Vector Control
 
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Transmission of Malaria

  1. An infected female Anopheles mosquito bites a human being. Plasmodium (malaria) parasites are then injected into the blood. The parasites pass quickly into the liver.
  2. The parasites multiply in liver cells for 7-10 days, without noticeable symptoms.
  3. Parasites burst from the liver cells and invade red blood cells and multiply again. The cycle is repeated, causing fever each time the parasites break free and invade.
  4. When another mosquito feeds on the patient, the ingested malaria parasite forms cysts in her stomach wall where thousands of thread-like sporozoites form. These migrate to the mosquito's salivary glands and are injected into a new victim with her saliva when she next feeds.
  5. The sporozoites migrate to the new victim’s liver and the cycle begins again.
  6. Typically, malaria symptoms are irregular fever, headache, muscular pain, sweats, chills, nausea and vomiting.
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