Answer:
Cyclospora cayetanesis
Explanation:
Cyclospora cayetanensis is a human protozoan parasite belonging to the phylum Apicomplexa. Cases of human cyclosporosis have been reported in the Americas, the Caribbean, Africa, England, Eastern Europe, and other regions of the world. Currently, this protozoan infection has only been found in humans. A curiosity about this protozoan is that it has a unique appearance with a blue halo when viewed using ultraviolet fluorescence microscopy. This can be seen in the image below.
