Dear friend, welcome and thanks for entrusting your query here at HCM!
I am Dr. Prasad Akole (Critical Care Expert- http://bit.ly/Dr-Prasad-Akole) and am glad to address to your query here.
The stool exam shows some cysts and trophozoites, most likely amoebic. They are parasites causing infection of the gut, dysentery
Occult blood may appear due to bowel infection.
Please consult your paediatrician and and on evaluation the child may need drug treatment for the infection, usually an imidazole derivative.
E. coli is mostly a common gut bacterium and can be neglected. Occasionally it may cause infection.
I hope you are fully satisfied with the guidance I gave.
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Thank you and Good luck!