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Plasmodium vivax is a protozoal parasite and a human pathogen.This parasite is the most frequent and widely distributed cause of recurring malaria. [2] Although it is less virulent than Plasmodium falciparum, the deadliest of the five human malaria parasites, P. vivax malaria infections can lead to severe disease and death, often due to splenomegaly (a pathologically enlarged spleen).
P. vivax and P. ovale that have been sitting in EDTA for more than half an hour before the blood film is made will look very similar in appearance to P. malariae, which is an important reason to warn the laboratory immediately when the blood sample is drawn so they can process the sample as soon as it arrives.
Primaquine is a medication used to treat and prevent malaria and to treat Pneumocystis pneumonia. [2] Specifically it is used for malaria due to Plasmodium vivax and Plasmodium ovale along with other medications and for prevention if other options cannot be used. [2]
Infection with P. vivax, P. ovale or P. malariae usually does not require hospitalisation. Treatment of P. vivax malaria requires both elimination of the parasite in the blood with chloroquine or with artemisinin-based combination therapy and clearance of parasites from the liver with an 8-aminoquinoline agent such as primaquine or tafenoquine.
P. ovale - P. ovale curtisi and P. ovale wallikeri; P. vivax - P. vivax hibernans, P. vivax chesson and P. vivax multinucleatum. Interrelatedness - The evolution of these species is still being worked out and the relationships given here should be regarded as tentative.
Schüffner's dots refers to a hematological finding that is associated with malaria, [1] exclusively found in infections caused by Plasmodium ovale or Plasmodium vivax. [ 2 ] Plasmodium vivax induces morphologic alterations in infected host erythrocytes that are visible by light microscopy in Romanowsky-stained blood smears as multiple brick ...
The epitope Fy6 is required for P. vivax invasion. [21] The protection to P. vivax malaria conferred by the absence of the Duffy antigen appears to be very limited at best in Madagascar. Although 72% of the population are Duffy antigen negative, 8.8% of the Duffy antigen negative individuals were asymptomatic carriers of P. vivax. [66]
P. vivax and P. ovale sitting in EDTA for more than 30 minutes before the blood film is made will look very similar in appearance to P. malariae, which is an important reason to warn the laboratory immediately when the blood sample is drawn so they can process the sample as soon as it arrives.