(240)-343-2585 info@essaymerit.com

Assignment: Principles of Disease and Epidemiology Biology Worksheet Assignment: Principles of Disease and Epidemiology Biology Worksheet Assignment: Principles of Disease and Epidemiology Biology Worksheet BIOLOGY 152; STUDY GUIDE: UNIT 9 PRINCIPLES OF DISEASE AND EPIDEMIOLOGY Reading: Chapter 14,15 Define the following terms: communicable disease etiologic agent pathogenicity sepsis septicemia symptom toxemia viremia bacteremia sporadic disease endemic disease epidemic disease pandemic disease local infection sign systemic infection focal infection zoonoses fomite incidence prevalence mortality Answer the following questions: 1. Describe the difference between a true pathogen and an opportunistic pathogen. Give an example of each. Describe 3 opportunities that an opportunistic bacterium might seize to cause infection. 2. What is a virulence factor? Describe the importance of adhesion, the role of toxins (including endotoxins and exotoxins) antiphagocytic factors, and extracellular enzymes in causing disease. 3. Describe the stages of disease (course of infection). During which stage(s) can a person be contagious? 4. Review Koch’s postulates. What exceptions to Koch’s postulates are you aware of? 5. What is the difference between a primary and a secondary infection? 6. What types of factors will predispose a body to disease? 7. Compare and contrast acute, chronic, subacute, and latent disease. Describe at least one example of a disease that falls in each category. 8. What are the three major groups of disease reservoirs? 9. Assignment Principles of Disease and Epidemiology Biology Worksheet Compare and contrast the three methods of contact transmission. 10. What is vehicle transmission? Provide 3 examples of vehicle transmission. 11. What is a vector? In what two ways can a vector transmit disease? 12. What is a nosocomial infection? What factors affect transmission of nosocomial infections? What sites are most likely to be affected by nosocomial infections? What are the most effective ways to control these infections? What are some of the main organisms currently involved in nosocomial infections? 13. What is epidemiology? What does an epidemiologist do? 14. What is the CDC? What is its function? 15. Describe the steps of phagocytosis. How can microbes avoid being phagocytosed? Click here to ORDER an A++ paper from our Verified MASTERS and DOCTORATE WRITERS: Assignment: Principles of Disease and Epidemiology Biology Worksheet Giving a universally valid definition of epidemiology is difficult. Epidemiology is not a science with a clearly defined field of application in contrast to anatomy or gastroenterology, which target specific parts or aspects of the human body. Rather it is a scientific method which can be applied to a broad range of health and medical problems, from infectious diseases to health care. Epidemiology is a constantly changing field of science, because new questions arise in population health and new statistical techniques are developed and adapted from other sciences. In times of modern information technologies and high-speed computers, new opportunities arise for data collection and storage on a large scale and for application of advanced bio-informatic and modelling techniques. In the era of globalization, many health problems are relevant on a global scale and intervention strategies have to be developed on an international level. In particular, for infectious disease epidemiology, global spread is increasingly important as demonstrated by the spread of the human immunodeficiency virus (HIV) and the pandemic spread of influenza A. Order Now