Case #480 – November, 2018

A man from New England returned from a trip to Africa with fever, chills, sweats, and fatigue. He sought medical attention from his health care provider.  A blood smear was ordered, prepared, stained with Wright-Giemsa and examined. A diagnosis of Babesia was made.  The slides and a blood specimen were sent to the CDC for confirmation.  Figures A-D show what was observed at 1000x oil magnification on one of the stained blood smears.  What is your diagnosis?  Based on what criteria?

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Figure A

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Figure B

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Figure C

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Figure D

Images presented in the dpdx case studies are from specimens submitted for diagnosis or archiving. On rare occasions, clinical histories given may be partly fictitious.

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Page last reviewed: January 22, 2019