epidemiology assignment

Each of your answers should be at least one paragraph in length. 1. Distinguish between “primary prevention” and “secondary prevention.” What are some considerations when implementing primary and secondary prevention programs? 2. Briefly describe a population approach and a high–risk approach to reducing the incidence of AIDS. 3. Define the term “incubation period”. Why is it important for public health personnel to know the incubation period of a disease? 4. What descriptors are used to characterize the distribution of cases in a disease outbreak? 5. Define the term “five–year survival rate”. Explain why five years is used as the time period.