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Volume 29, Number 10—October 2023
Research Letter

Plasmodium knowlesi Infection in Traveler Returning to Canada from the Philippines, 2023

Calvin Ka-Fung Lo, Katherine Plewes, Sakuntla Sharma, Alicia Low, LingHui D. Su, Sara Belga, Ferdinand V. Salazar, Jan Hajek, Muhammad Morshed, and Catherine A. HoganComments to Author 
Author affiliations: University of British Columbia, Vancouver, British Columbia, Canada (C. Ka-Fung Lo, K. Plewes, S. Belga, J. Hajek, M. Morshed, C.A. Hogan); Mahidol–Oxford Tropical Medicine Research Unit, Mahidol University, Bangkok, Thailand (K. Plewes); Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, UK (K. Plewes); British Columbia Centre for Disease Control, Vancouver (S. Sharma, A. Low, L.D. Su, M. Morshed, C.A. Hogan); Research Institute of Tropical Medicine, Muntinlupa, the Philippines (F.V. Salazar)

Main Article

Figure

Peripheral thick and thin blood smears of a man in British Columbia, Canada, with suspected Plasmodium knowlesi infection after travel to the Phillippines. A) Thick smear showing P. knowlesi gametocyte.. B) Thin smear showing band form within a normal-sized, fimbriated erythrocyte with vacuoles present, similar to P. malariae. C) Thin smear showing P. knowlesi schizont form with presence of greenish-black pigment and lack of rosette formation. Original magnification x100 for all smears.

Figure. Peripheral thick and thin blood smears of a man in British Columbia, Canada, with suspected Plasmodium knowlesi infection after travel to the Phillippines. A) Thick smear showing P. knowlesi gametocyte.. B) Thin smear showing band form within a normal-sized, fimbriated erythrocyte with vacuoles present, similar to P. malariae. C) Thin smear showing P. knowlesi schizont form with presence of greenish-black pigment and lack of rosette formation. Original magnification x100 for all smears.

Main Article

Page created: August 15, 2023
Page updated: September 20, 2023
Page reviewed: September 20, 2023
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