A person suffers from a diseases in which a slowly developing chronic inflammation of the organs is observed. The pathogen is known to live in the lymphatic vessels of the lower limbs. They also form gross deformities and affects the genital organs. Which of the following organisms is the vector for this disease ?

Options

A. Anopheles
B. Wuchereria
C. Ascaris
D. Culex

Answer

To solve the question regarding the disease characterized by chronic inflammation and the organism that acts as a vector, we can follow these steps:

### Step 1: Identify the Disease
The symptoms described in the question indicate a disease known as **Lymphatic Filariasis**. This disease is characterized by chronic inflammation of the lymphatic system, leading to severe swelling of the limbs and genital organs.

**Hint:** Look for symptoms that indicate inflammation and swelling, particularly in the lymphatic system.

### Step 2: Identify the Causative Organism
The causative organism for Lymphatic Filariasis is a parasitic worm known as **Wuchereria bancrofti**. This organism resides in the lymphatic vessels and is responsible for the chronic symptoms observed in the disease.

**Hint:** Focus on the organism that causes chronic inflammation in the lymphatic system.

### Step 3: Determine the Vector
The question asks for the vector that spreads this disease. The primary vectors for Lymphatic Filariasis are **mosquitoes**, specifically the **Culex** species. These mosquitoes transmit the filarial larvae to humans through their bites.

**Hint:** Consider which insects are known to transmit diseases related to the lymphatic system.

### Step 4: Evaluate the Options
Given the options provided:
1. Anopheles
2. Vituria
3. Ascaris
4. Culex Mosquito

- **Anopheles** is primarily a vector for malaria, not filariasis.
- **Vituria** is not a vector; it is the name of the causative organism.
- **Ascaris** is a type of roundworm and does not act as a vector.
- **Culex Mosquito** is the correct answer as it is known to transmit Lymphatic Filariasis.

**Hint:** Eliminate options that do not relate to the transmission of the identified disease.

### Final Answer
The organism that acts as a vector for the disease described is the **Culex Mosquito** (Option 4).

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