Two expert research microscopists, each blinded to the other's reports, diagnosed single-species malaria infections in 2,141 adults presenting at outpatient malaria clinics in Tak Province, Thailand, and Iquitos, Peru, in May–August 1998, May– July 1999, and May–June 2001. Plasmodium vivax patients with gametocytemia had higher fever and higher parasitemia than those without gametocytemia; temperature correlated with parasitemia in the patients with gametocytemia. Plasmodium falciparum patients with gametocytemia had lower fever than those without gametocytemia, but similar parasitemia; temperature correlated with parasitemia in the patients without gametocytemia. Hematologic data in Thailand in 2001 showed lower platelet counts in P. vivax patients with gametocytemia than in the P. vivax patients without gametocytemia, whereas P. falciparum patients with gametocytemia had similar platelet counts but lower red blood cell counts, hemoglobin levels, hematocrit levels, and higher lymphocyte counts than patients without gametocytemia.
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December 2006
PATHOLOGY|
December 01 2006
GAMETOCYTEMIA IN PLASMODIUM VIVAX AND PLASMODIUM FALCIPARUM INFECTIONS
F. Ellis McKenzie;
F. Ellis McKenzie
Fogarty International Center, National Institutes of Health, Bethesda, Maryland 20892. em225k@nih.gov
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Chansuda Wongsrichanalai;
Chansuda Wongsrichanalai
Fogarty International Center, National Institutes of Health, Bethesda, Maryland 20892. em225k@nih.gov
* U.S. Naval Medical Research Unit No. 2 (NAMRU-2), Jakarta, Indonesia
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Alan J. Magill;
Alan J. Magill
Fogarty International Center, National Institutes of Health, Bethesda, Maryland 20892. em225k@nih.gov
† Walter Reed Army Institute of Research, Silver Spring, Maryland
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J. Russ Forney;
J. Russ Forney
Fogarty International Center, National Institutes of Health, Bethesda, Maryland 20892. em225k@nih.gov
† Walter Reed Army Institute of Research, Silver Spring, Maryland
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Barnyen Permpanich;
Barnyen Permpanich
Fogarty International Center, National Institutes of Health, Bethesda, Maryland 20892. em225k@nih.gov
‡ Armed Forces Research Institute of Medical Sciences (AFRIMS), Bangkok, Thailand
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Carmen Lucas;
Carmen Lucas
Fogarty International Center, National Institutes of Health, Bethesda, Maryland 20892. em225k@nih.gov
§ U.S. Naval Medical Research Center Detachment (NMRCD), Lima, Peru
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Laura M. Erhart;
Laura M. Erhart
Fogarty International Center, National Institutes of Health, Bethesda, Maryland 20892. em225k@nih.gov
‡ Armed Forces Research Institute of Medical Sciences (AFRIMS), Bangkok, Thailand
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Wendy P. O'Meara;
Wendy P. O'Meara
Fogarty International Center, National Institutes of Health, Bethesda, Maryland 20892. em225k@nih.gov
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David L. Smith;
David L. Smith
Fogarty International Center, National Institutes of Health, Bethesda, Maryland 20892. em225k@nih.gov
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Jeeraphat Sirichaisinthop;
Jeeraphat Sirichaisinthop
Fogarty International Center, National Institutes of Health, Bethesda, Maryland 20892. em225k@nih.gov
‖ Department of Communicable Disease Control, Ministry of Public Health, Bangkok, Thailand
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Robert A. Gasser, Jr.
Robert A. Gasser, Jr.
Fogarty International Center, National Institutes of Health, Bethesda, Maryland 20892. em225k@nih.gov
† Walter Reed Army Institute of Research, Silver Spring, Maryland
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J Parasitol (2006) 92 (6): 1281–1285.
Citation
F. Ellis McKenzie, Chansuda Wongsrichanalai, Alan J. Magill, J. Russ Forney, Barnyen Permpanich, Carmen Lucas, Laura M. Erhart, Wendy P. O'Meara, David L. Smith, Jeeraphat Sirichaisinthop, Robert A. Gasser; GAMETOCYTEMIA IN PLASMODIUM VIVAX AND PLASMODIUM FALCIPARUM INFECTIONS. J Parasitol 1 December 2006; 92 (6): 1281–1285. doi: https://doi.org/10.1645/GE-911R.1
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