Colpodella spp.–like Parasite Infection in Woman, China
Cong L. Yuan, Patrick J. Keeling, Peter J. Krause, Ales Horak, Stephen Bent, Lindsay Rollend, and Xiu G. Hua
Author affiliations: Shanghai Jiaotong University, Shanghai, People’s Republic of China (C.L. Yuan, X.G. Hua); University of British Columbia, Vancouver, British Columbia, Canada (P.J. Keeling, A. Horak); Yale School of Medicine, New Haven, Connecticut, USA (P.J. Krause, S. Bent, L. Rollend)
Figure 1. Morphologic appearance of infected erythrocytes of a 57-year-old woman in China and immunofluorescent antibody test results. A) Giemsa-stained thin blood smear showing erythrocyte infected with multiple ring forms (arrowhead). Scale bar = 10 µm; original magnification ×100. B) Patient serum reactive against Colpodella antigen. Scale bar = 20 µm; original magnification ×40. C) Healthy control serum not reactive against Colpodella antigen. Scale bar = 20 µm; original magnification ×40. D) Patient serum not reactive (green fluorescence) against Babesia microti antigen. Scale bar = 20 µm; original magnification ×40. E) B. microti–infected mouse serum reactive against B. microti antigen. Scale bar = 20 µm; original magnification ×40.
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