**Core Concept**
Disease control refers to the ongoing efforts to reduce the incidence and prevalence of infectious diseases within a population. It involves a combination of public health measures, surveillance, and interventions to prevent the spread of disease. Disease control is distinct from disease eradication, which aims to completely eliminate a disease from a population.

**Why the Correct Answer is Right**
The correct answer is not specified in the given options. However, we can infer that disease control efforts typically aim to reduce the incidence and prevalence of diseases, including the number of new cases (incidence) and the total number of cases (prevalence). Disease control may also involve reducing the severity of disease, the number of complications, and the mortality rate.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is a common target of disease control efforts. Reducing the incidence and prevalence of a disease often involves reducing the number of new cases.
**Option B:** Similarly, reducing the prevalence of a disease often involves reducing the total number of cases, including both new and existing cases.
**Option C:** Reducing the mortality rate is also a key goal of disease control efforts, as it reflects the number of deaths attributed to a particular disease.

**Clinical Pearl / High-Yield Fact**
In public health, disease control efforts often focus on reducing the incidence and prevalence of diseases through a combination of prevention, early detection, and treatment. This may involve vaccination campaigns, improved sanitation and hygiene, and enhanced surveillance and reporting of disease outbreaks.

**Correct Answer: Not Provided**