Bovine spongiform encephalopathy disease is equal to

Options

A. Kala-azar
B. Encephalitis
C. Cerebral spondylitis
D. Creutzfeldt Jacob disease

Explanation

### Step-by-Step Solution:

1. **Understanding Bovine Spongiform Encephalopathy (BSE)**:
- BSE, commonly known as "mad cow disease," is a neurodegenerative disease that affects adult cattle. It is characterized by the degeneration of brain tissue, leading to severe neurological symptoms.

2. **Transmission to Humans**:
- Humans can contract a variant of this disease by consuming meat products from infected cattle. This transmission occurs when humans eat the brain or spinal tissue of infected animals.

3. **Human Equivalent of BSE**:
- The human version of BSE is known as Creutzfeldt-Jakob disease (CJD). This disease is also a prion disease, similar to BSE, and leads to severe neurological decline and ultimately death.

4. **Analyzing the Options**:
- Option 1: Kalajar - This is caused by a parasite and is unrelated to BSE.
- Option 2: Encephalitis - This is an inflammation of the brain, not specifically related to BSE.
- Option 3: Cerebral Spondylitis - This affects the spinal discs and is not related to BSE.
- Option 4: Creutzfeldt-Jakob disease - This is indeed the human equivalent of BSE.

5. **Conclusion**:
- Based on the understanding of BSE and its implications for human health, the correct answer to the question is that Bovine Spongiform Encephalopathy disease is equal to Creutzfeldt-Jakob disease.

### Final Answer:
Bovine spongiform encephalopathy disease is equal to Creutzfeldt-Jakob disease (Option 4).

---