Which of the following definitions is INCORRECT? A. endemic: a disease that is constantly present in a population B. epidemic: a disease that is endemic across the world C. pandemic: a disease that affects a large number of people in the world in a short time D. sporadic: a disease that affects a population occasionally E. incidence: number of new cases of a disease
The Correct Answer and Explanation is:
Correct Answer: B. epidemic: a disease that is endemic across the world
Explanation:
The term “epidemic” is incorrectly defined in option B. An epidemic refers to a sudden increase in the number of cases of a disease above what is normally expected in a specific population and area. It is not accurate to describe an epidemic as a disease that is “endemic across the world.” A disease that is present globally and consistently is more accurately described as pandemic or endemic, depending on context and scale.
To clarify the other terms:
- A. endemic: This is correctly defined. An endemic disease is one that is constantly present in a particular geographic area or population. For example, malaria is endemic in some regions of sub-Saharan Africa.
- C. pandemic: This is also correct. A pandemic is an outbreak of a disease that occurs over a wide geographic area and affects an exceptionally high proportion of the global population in a relatively short time. COVID-19 is a prime example.
- D. sporadic: The term is correctly used here. A sporadic disease occurs only occasionally and irregularly within a population or geographic area. It does not follow a predictable pattern.
- E. incidence: This is accurately defined as well. Incidence refers to the number of new cases of a disease in a specific population during a defined time period. It is used to measure the risk of developing the disease.
In conclusion, the incorrect definition is in option B, where “epidemic” is mistakenly equated to a condition being “endemic across the world,” which confuses the concepts of localized outbreaks and global disease presence.
