**Core Concept**
International notification is a crucial aspect of public health, particularly in the context of infectious diseases. It involves informing the relevant authorities in other countries about outbreaks or suspected cases of diseases that could have international implications, allowing for timely control measures and prevention of potential spread.

**Why the Correct Answer is Right**
The correct answer involves understanding the importance of international notification in preventing the spread of infectious diseases. This process relies on the World Health Organization's (WHO) International Health Regulations (IHR), which mandate countries to report certain diseases to the WHO. The reporting of diseases like cholera, plague, and smallpox is mandatory under IHR. For instance, when a case of cholera is diagnosed, the country must notify the WHO, enabling global coordination to prevent the spread of the disease.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect as there is no specific exception to international notification in the context of diseases like cholera, plague, and smallpox.
* **Option B:** This option is incorrect as international notification is a critical component of public health policy, and there is no evidence to suggest that it is not required for certain diseases.
* **Option C:** This option is incorrect as countries are obligated to report diseases that meet specific criteria under the IHR, and there is no exception for diseases like cholera, plague, and smallpox.

**Clinical Pearl / High-Yield Fact**
One key point to remember is that the IHR mandate countries to report diseases that pose a public health risk with the potential for international spread, and the list of reportable diseases is regularly updated based on global health security concerns.

**Correct Answer:** A.