**Core Concept**
The World Health Organization (WHO) surveillance is a system of detecting, reporting, and analyzing public health events and trends to inform evidence-based decisions. It involves monitoring and evaluating health-related data to identify potential outbreaks, disease patterns, and other health concerns.

**Why the Correct Answer is Right**
WHO surveillance is implemented in countries with the goal of detecting and responding to public health events in a timely and effective manner. This includes monitoring infectious diseases, non-communicable diseases, and other health-related issues. The surveillance system relies on collecting and analyzing data from various sources, including laboratory results, clinical reports, and death certificates. By doing so, WHO can provide guidance and support to countries in responding to public health emergencies and promoting overall health security.

**Why Each Wrong Option is Incorrect**
**Option A:**
This option is incorrect because WHO surveillance is indeed done in countries with endemic and epidemic-prone diseases, such as malaria and tuberculosis.

**Option B:**
This option is incorrect because WHO surveillance is not limited to countries with high disease burden; it also involves monitoring and evaluating health trends in countries with low disease burden.

**Option C:**
This option is incorrect because WHO surveillance is not done in countries that are not members of the WHO or have not agreed to participate in the surveillance program.

**Clinical Pearl / High-Yield Fact**
One key aspect of WHO surveillance is the use of standardized reporting forms and guidelines to ensure consistency and comparability of data across countries.

**Correct Answer:** D.