Final answer:
Poliovirus infections can have various outcomes, including asymptomatic infections, mild intestinal disease, or paralysis if the virus affects cells in the central nervous system.
Step-by-step explanation:
When a person is infected with poliovirus, the outcomes can vary. According to statistics, approximately 72% of poliovirus infections are asymptomatic, meaning the person doesn't show any symptoms. Another 25% of infections result in mild intestinal disease, causing symptoms like nausea, fever, and headache. However, in about 1 in every 200 cases, the virus affects cells in the central nervous system, leading to paralysis.