Chapter 12: The Epidemiological Triad

By: Kate Sciera, Daniel Levy, Ditue Paul, Fnu Tenzin Bhuti



  • Describe the epidemiological triad
  • Discuss each component of the triad
  • Explain the interaction between the components
  • Apply this model to infectious diseases
  • Apply this model to chronic diseases

“There is something fascinating about science. One gets such wholesale returns of conjecture out of such a trifling investment of fact.”

~ Mark Twain