This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Parasitology Pa 2 (Helminthology), Subject name: Microbiology
Calabar swellings seen in: 
Select and explain. 
A. Ascaris, B. Hymenolepis, C. Loa Loa, D. Strongyloides
C: Loa Loa
Answer: C: Loa Loa 
Explanation: Calabar swellings are localized subcutaneous edemas, a type of inflammatory reaction brought about by a host response to the worm or its metabolic products. Argyll-Robeson described the adult worms of LOA LOA that he extracted from the eye of a woman who had resided at Old Calabar in West Africa.