The polio virus enters the human body through

Options

A. Mosquito bite
B. Tick bite
C. Saliva and secretions from the nose
D. Contaminated food and water

Answer

To determine how the polio virus enters the human body, we can analyze the options provided in the question:

1. **Understanding Polio Virus**: The polio virus is known to cause poliomyelitis, a disease that primarily affects children, especially those aged 1 to 5 years. It can lead to muscle weakness and paralysis by affecting the spinal cord.

2. **Examining the Options**:
- **A. Mosquito Bite**: This option is incorrect. Polio is not transmitted through mosquito bites.
- **B. Tick Bite**: This option is also incorrect. The polio virus is not transmitted by ticks.
- **C. Saliva and Secretions from the Nose**: While some viruses can be transmitted through respiratory secretions, polio is not primarily spread this way.
- **D. Contaminated Food and Water**: This is the correct option. The polio virus is transmitted via the fecal-oral route, meaning it spreads through contaminated food and water that has been tainted by the feces of an infected person.

3. **Conclusion**: The polio virus enters the human body through contaminated food and water, making option D the correct answer.

**Final Answer**: The polio virus enters the human body through **D. contaminated food and water**.

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