Polio disease is spread by

Parasite

Bacteria

Virus

Protozoa

Polio, or poliomyelitis, is a disabling and life-threatening disease caused by the poliovirus.
Polio is usually spread via the fecal-oral route (i.e., the virus is transmitted from the stool of an infected person to the mouth of another person from contaminated hands or such objects as eating utensils).
Some cases may be spread directly via an oral to oral route.

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