Typhoid Mary his known in history to cause more than 1300 cases in her lifetime. This is an example of which of the following epidemic?
## **Core Concept**
Typhoid Mary, also known as Mary Mallon, was an Irish-American cook who was an asymptomatic carrier of typhoid fever. She is a classic example in the history of epidemiology, known for causing a significant outbreak of typhoid fever. The core concept here revolves around the types of epidemics, specifically focusing on the role of carriers in disease transmission.
## **Why the Correct Answer is Right**
The correct answer, **Point Source Outbreak** or more accurately in this context, a **Continuous Source Outbreak**, is related to the role of Typhoid Mary. However, given the context, it seems there might be confusion because Typhoid Mary's case is often cited as an example of a **Propagated Outbreak** or **Continuous Source Outbreak**, where a single source (in this case, Mary) continuously infects others over a period. This is because she worked as a cook and infected many people through the food she handled.
## **Why Each Wrong Option is Incorrect**
- **Option A:** If this option described a propagated outbreak or another type not fitting Typhoid Mary's scenario, it would be incorrect based on the definitions. Without specific details on A, B, and C, we proceed with general knowledge that Typhoid Mary's case doesn't fit a **Point Source Outbreak** (where many people get sick from the same source at one time) but rather spread over time.
- **Option B:** Similarly, if this doesn't align with the propagated or continuous source outbreak, it's incorrect.
- **Option C:** Assuming this doesn't describe a scenario fitting Typhoid Mary's continuous spread of disease, it's incorrect.
## **Clinical Pearl / High-Yield Fact**
A key point to remember is that **asymptomatic carriers** like Typhoid Mary can significantly contribute to the spread of infectious diseases. Typhoid Mary's case highlights the importance of screening for carriers of infectious diseases, especially in high-risk professions like food handling.
## **Correct Answer:** C. Continuous Source Outbreak