Use the answer sheet at the end of the document to submit your answers to the questions below. You must have at least 4 complete sentences. 1. The definition of epidemiology includes the terms "distribution" and "determinants." Describe the meaning of these terms. 2. Describe the chain of infection. 3. Define "efficacy" and "effectiveness," note their difference, and provide examples of both. 4. Distinguish between a necessary cause and a sufficient cause.

Please answer the 4 questions above