## Core Concept
The World Health Organization (WHO) mandates the surveillance of certain diseases that have the potential to cause significant public health concerns, including outbreaks and pandemics. These diseases are subject to international health regulations (IHR) and require notification to national health authorities.

## Why the Correct Answer is Right
The correct answer, , is not specifically listed, but based on common knowledge of diseases under WHO surveillance, we can infer that diseases like cholera, plague, and yellow fever are typically under strict surveillance. These diseases have been historically significant and have the potential for outbreaks. The specific disease in would need to be evaluated against the common list of diseases under WHO surveillance.

## Why Each Wrong Option is Incorrect
- **Option A:** Diseases like cholera are indeed under strict surveillance by WHO due to their potential for causing outbreaks and the severity of their impact on public health.
- **Option B:** Similarly, diseases such as plague are also under surveillance because of their historical impact and potential for bioterrorism.
- **Option C:** Yellow fever, another disease under surveillance, is significant due to its high mortality rate and potential for outbreaks in endemic areas.

## Clinical Pearl / High-Yield Fact
A key point to remember is that under the International Health Regulations (2005), countries are required to report certain diseases to the WHO, including cholera, plague, and yellow fever, to prevent and respond to public health emergencies of international concern.

## Correct Answer Line
**Correct Answer: D. **