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Case of the Week 21

The following images are from a peripheral blood smear from a 93 year old male from Connecticut. No travel history is received.

The geography, apparent lack of travel history, and pleomorphism of the ring forms make me think this is Babesiosis.

Plasmodium falciparum ring stage.

I would tend to agree with DrJ. The size and parasite load of the organisms along with the geography are good for Babesiosis.

Yeah, thats not falciparum.