Which of these is the mode of transmission for poliovirus in human?

Options

A. Contact
B. Water
C. Food
D. Pets

Answer

To determine the mode of transmission for the poliovirus in humans, we can follow these steps:

### Step 1: Understand the Poliovirus
The poliovirus is an RNA virus that primarily causes poliomyelitis, which can lead to paralysis, particularly affecting the spinal cord.

**Hint:** Think about what kind of virus poliovirus is and what disease it causes.

### Step 2: Identify Transmission Methods
The poliovirus can spread from person to person. It is important to consider how this transmission occurs. Common routes include contact with contaminated surfaces, ingestion of contaminated food or water, and direct person-to-person contact.

**Hint:** Consider how viruses typically spread in the environment and which routes are most common.

### Step 3: Analyze the Options
The options given are:
- Contact
- Water
- Food
- Pets

We need to evaluate which of these options is a recognized mode of transmission for the poliovirus.

**Hint:** Recall that certain viruses are more commonly spread through specific mediums, such as water or food.

### Step 4: Focus on Water Transmission
Research indicates that the poliovirus is primarily transmitted through the oral-fecal route, which often involves contaminated water. This means that drinking water that has been contaminated with fecal matter containing the virus can lead to infection.

**Hint:** Think about how contaminated water can enter the body and lead to disease.

### Step 5: Conclusion
Based on the information gathered, the mode of transmission for the poliovirus in humans is primarily through contaminated water.

**Final Answer:** The mode of transmission for the poliovirus in humans is **water**.