James Phipps and Ali Marvow are related to viral disease that has disappeared

Options

A. Cow pox
B. Small pox
C. Chicken pox
D. Tuberculosis

Answer

**Step-by-Step Solution:**

1. **Identify the Scientists**: The question mentions two individuals, James Phipps and Ali Marvow, who are related to a viral disease that has disappeared.

2. **Understand the Options**: The options provided are cowpox, smallpox, chickenpox, and tuberculosis. We need to determine which of these diseases has completely disappeared.

3. **Research the Diseases**:
- **Cowpox**: A disease that is not eradicated but is used for vaccination against smallpox.
- **Smallpox**: An acute contagious disease that was unique to humans and caused by the Variola virus.
- **Chickenpox**: A common viral infection caused by the varicella-zoster virus, which is not eradicated.
- **Tuberculosis**: A bacterial infection that is still present worldwide.

4. **Determine the Disappeared Disease**: Smallpox is the only disease among the options that has been declared eradicated. The last natural case of smallpox was reported in 1977, and it was officially declared eradicated in 1980 following a global immunization campaign led by the World Health Organization (WHO).

5. **Link the Scientists to Smallpox**:
- James Phipps was the first person to receive a cowpox vaccine from Edward Jenner, which provided immunity to smallpox.
- Ali Marvow was the last person to contract smallpox naturally in 1977.

6. **Conclusion**: Therefore, the viral disease that has disappeared, related to the individuals mentioned, is smallpox.

**Final Answer**: Smallpox

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