Problem: Discuss what communicable diseases and the epidemiological triangle are. Then focus on one of the specific communicable diseases covered in chapter 27 of the Foundations for population health in community/public health nursing 5th edition by Marcia Stanhope PhD RN FAAN. Research and discuss the disease process, steps for prevention, and care practices for an infected individual. What is the nurse's role in contact tracing? PLEASE scholarly references are 5 years old or newer. Please avoid dot com websites and instead search for peer-reviewed journals and articles.