Case of the Week 558

This week ' s case presents a bit of a conundrum. The patient is a 50 year old woman with recent travel to Kenya. She presents with acute onset of fever and chills and was tested by a rapid malaria antigen test (P. falciparumand Pan-malaria antigens) and was negative. A follow-up Giemsa-stained thin blood smear from the same blood collection shows the following:Identification based on the blood smear? How might this correlate with the rapid antigen test?
Source: Creepy Dreadful Wonderful Parasites - Category: Parasitology Source Type: blogs