Episodes of repeated thin stools with mucus, subjective feeling of fever and lower abdominal pain, with leukocytes in stool. Which of the following is likely?

As leucocytes are present in stools so it is inflammatory type of diarrhea. So the likely organism is Entamoeba As Staph and C. perfringens are responsible for water diarrhea (non-inflammatory diarrhea) Giardia cause malabsorption syndrome.