This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: JIPMER 2019, Subject name: Microbiology
Autoinfection is NOT seen in: 
Select and explain. 
A. H. nana, B. H. diminuta, C. Strongyloidosis, D. Taenia solium
B: H. diminuta
Answer: B: H. diminuta 
Explanation: Autoinfection is seen in- C- Cryptosporidium parvum H- H. nana E- Enterobius vermicularis S- Strongyloides stercoralis T- Taenia solium Reference- Paniker Textbook of Parasitology 8th Ed pg no 148 Q209 Smallest helminth..... Sol- - H-nana (Dwarf tapeworm) - smallest tapeworm with an adult length of 15-44mm - H. diminuta (Rat tapeworm) - cestode of mainly rodents with an adult length of 20-60cm -Balantidium coli is the only pathogenic ciliate -D. latum is 30 feet.