<prompt> Most common GI manifestation in HIV infection is -AmebiasisCryptosoporidiosisGiaridiasisHook Worm infestation  <response>: Chronic small bowel diarrhea may be due to HIV enteropathy.typically present with chronic watery diarrhea wasting without fever.Infection with one of three unicellular organisms is responsible for most cases: cryptosporidiosis,mucrosporidiosis, isosporiasis. Reference: Harrison20th edition pg 789 