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Color Atlas of Hematology - Practical Microscopic and Clinical ...

Color Atlas of Hematology - Practical Microscopic and Clinical ...

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160Erythrocyte <strong>and</strong> Thrombocyte AbnormalitiesThe example shown here is <strong>of</strong> the erythrocytic phases <strong>of</strong> P. vivax, becausetertian malaria is the most common form <strong>of</strong> malaria <strong>and</strong> best showsthe basic morphological characteristics <strong>of</strong> a plasmodia infection.Table 27 Parasitology <strong>of</strong> malaria <strong>and</strong> clinical characteristics (from Diesfeld, H., G.Krause: Praktische Tropenmedizin und Reisemedizin. Thieme, Stuttgart 1997)Disease Pathogen Exoerythrocyticphase incubationErythrocyticphase<strong>Clinical</strong> characteristicsFalciparummalariaTertianmalariaQuartanmalariaPlasmodiumfalciparumP. vivaxP. ovale⎫⎪⎬⎪⎭7–15 days, doesnot form liverhypnozoites12-18 days,forms liverhypnozoitesP. malariae 18-40 days,does not formliver hypnozoites48 hours,recurringfever is rare48 hoursPotentially lethaldisease, widelytherapy-resistant,there is usually norecurrence afterrecoveryBenign form recurrencesup to 2 yearsafter infectionBenign form recurrencesup to 5 yearsafter infection72 hours Benign form recurrencespossible upto 30 years afterinfection

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