<prompt> Profuse watery diarrhea in an immuno compromised child is due to -CryptococcusAmoebaGiardiaLactose intolerance  <response>: Ans. is c i.e., Giardia Diarrhea in immunocompromised child AIDS include bacterial salmonella, compylobacter ,protozoal giardiasis, cryptosporidium, and viral CMV, HSV causes. 