Lesson 1: Introduction to Epidemiology
Summary, References, and Websites
As the basic science of public health, epidemiology includes the study of the frequency, patterns, and causes of health-related states or events in populations, and the application of that study to address public health issues. Epidemiologists use a systematic approach to assess the What, Who, Where, When, and Why/How of these health states or events. Two essential concepts of epidemiology are population and comparison. Core epidemiologic tasks of a public health epidemiologist include public health surveillance, field investigation, research, evaluation, and policy development. In carrying out these tasks, the epidemiologist is almost always part of the team dedicated to protecting and promoting the public's health.
Epidemiologists look at differences in disease and injury occurrence in different populations to generate hypotheses about risk factors and causes. They generally use cohort or case-control studies to evaluate these hypotheses. Knowledge of basic principles of disease occurrence and spread in a population is essential for implementing effective control and prevention measures.
- Last JM, editor. Dictionary of epidemiology. 4th ed. New York: Oxford University Press; 2001. p. 61.
- Cates W. Epidemiology: Applying principles to clinical practice. Contemp Ob/Gyn 1982;20:147–61.
- Greenwood M.Epidemics and crowd-diseases: an introduction to the study of epidemiology, Oxford University Press; 1935.
- Thacker SB. Historical development. In: Teutsch SM, Churchill RE, editors. Principles and practice of public health surveillance, 2nd ed. New York: Oxford University Press; 2002. p. 1–16.
- Snow J. Snow on cholera. London: Humphrey Milford: Oxford University Press; 1936.
- Doll R, Hill AB. Smoking and carcinoma of the lung. Brit Med J 1950;2:739–48.
- Kannel WB. The Framingham Study: its 50-year legacy and future promise. J Atheroscler Thromb 2000;6:60-6.
- Fenner F, Henderson DA, Arita I, Jezek Z, Ladnyi ID. Smallpox and its eradication. Geneva: World Health Organization; 1988.
- Morris JN. Uses of epidemiology. Edinburgh: Livingstone; 1957.
- U.S. Department of Health and Human Services (HHS). Healthy people 2000: national health promotion and disease prevention objectives. Washington, DC: HHS, Public Health Service; 1991.
- U.S. Department of Health and Human Services (HHS). Healthy people 2010. 2nd ed. Washington, DC: U.S. Government Printing Office (GPO); November 2000.
- U.S. Department of Health and Human Services (HHS). Tracking healthy people 2010. Washington, DC: GPO; November 2000.
- Eidson M, Philen RM, Sewell CM, Voorhees R, Kilbourne EM. L-tryptophan and eosinophilia-myalgia syndrome in New Mexico. Lancet 1990;335:645–8.
- Kamps BS, Hoffmann C, editors. SARS Reference, 3rd ed. Flying Publisher, 2003. Available from: http://www.sarsreference.com/index.htm.
- Murphy TV, Gargiullo PM, Massoudi MS, et al. Intussusception among infants given an oral rotavirus vaccine. N Eng J Med 2001;344:564–72.
- Fraser DW, Tsai TR, Orenstein W, Parkin WE, Beecham HJ, Sharrar RG, et al. Legionnaires' disease: description of an epidemic of pneumonia. New Engl J Med 1977; 297:1189–97.
- Tyler CW, Last JM. Epidemiology. In: Last JM, Wallace RB, editors. Maxcy-Rosenau-Last public health and preventive medicine, 14th ed. Norwalk (Connecticut): Appleton & Lange; 1992. p. 11.
- Orenstein WA, Bernier RH. Surveillance: information for action. Pediatr Clin North Am 1990; 37:709–34.
- Wagner MM, Tsui FC, Espino JU, Dato VM, Sittig DF, Caruana FA, et al. The emerging science of very early detection of disease outbreaks. J Pub Health Mgmt Pract 2001;6:51–9.
- Centers for Disease Control and Prevention. Framework for evaluating public health surveillance systems for early detection of outbreaks: recommendations from the CDC Working Group. MMWR May 7, 2004; 53(RR05);1–11.
- Centers for Disease Control and Prevention. Interim guidance on infection control precautions for patients with suspected severe acute respiratory syndrome (SARS) and close contacts in households. Available from: http://emergency.cdc.gov/HAN/han00132.asp.
- Beaglehole R, Bonita R, Kjellstrom T. Basic epidemiology. Geneva: World Health Organization; 1993. p. 133.
- Centers for Disease Control and Prevention. Updated guidelines for evaluating public health surveillance systems: recommendations from the Guidelines Working Group. MMWR Recommendations and Reports 2001:50(RR13).
- Rothman KJ. Policy recommendations in epidemiology research papers. Epidemiol 1993; 4: 94–9.
- Centers for Disease Control and Prevention. Case definitions for infectious conditions under public health surveillance. MMWR Recomm Rep 1997:46(RR-10):1–55.
- MacDonald P, Boggs J, Whitwam R, Beatty M, Hunter S, MacCormack N, et al. Listeria-associated birth complications linked with homemade Mexican-style cheese, North Carolina, October 2000 [abstract]. 50th Annual Epidemic Intelligence Service Conference; 2001 Apr 23–27; Atlanta, GA.
- Centers for Disease Control and Prevention. Outbreak of severe acute respiratory syndrome–worldwide, 2003. MMWR 2003: 52:226–8.
- Centers for Disease Control and Prevention. Revised U.S. surveillance case definition for severe acute respiratory syndrome (SARS) and update on SARS cases–United States and worldwide, December 2003. MMWR 2003:52:1202–6.
- Centers for Disease Control and Prevention. Indicators for chronic disease surveillance. MMWR Recomm Rep 2004;53(RR-11):1–6.
- Centers for Disease Control and Prevention. Summary of notifiable diseases–United States, 2001. MMWR 2001;50(53).
- Arias E, Anderson RN, Hsiang-Ching K, Murphy SL, Kovhanek KD. Deaths: final data for 2001. National vital statistics reports; vol 52, no. 3. Hyattsville (Maryland): National Center for Health Statistics; 2003.
- Goodman RA, Smith JD, Sikes RK, Rogers DL, Mickey JL. Fatalities associated with farm tractor injuries: an epidemiologic study. Public Health Rep 1985;100:329–33.
- Heyman DL, Rodier G. Global surveillance, national surveillance, and SARS. Emerg Infect Dis. 2003;10:173–5.
- American Cancer Society [Internet]. Atlanta: The American Cancer Society, Inc. Available from: http://www.cancer.org/Research/CancerFactsFigures/cancer-facts-figures-2005/.
- Centers for Disease Control and Prevention. Current trends. Lung cancer and breast cancer trends among women–Texas. MMWR 1984;33(MM19):266.
- Liao Y, Tucker P, Okoro CA, Giles WH, Mokdad AH, Harris VB, et. al. REACH 2010 surveillance for health status in minority communities — United States, 2001–2002. MMWR 2004;53:1–36.
- Centers for Disease Control and Prevention. Asthma mortality — Illinois, 1979–1994. MMWR. 1997;46(MM37):877–80.
- Centers for Disease Control and Prevention. Hepatitis A outbreak associated with green onions at a restaurant–Monaca, Pennsylvania, 2003. MMWR 2003; 52(47):1155–7.
- Knowler WC, Barrett-Connor E, Fowler SE, Hamman RF, Lachin JM, Walker EA, Nathan DM, Diabetes Prevention Program Research Group. Reduction in the incidence of type 2 diabetes with lifestyle intervention or metformin. N Engl J Med 2002;346:393–403.
- Colditz GA, Manson JE, Hankinson SE. The Nurses' Health Study: 20-year contribution to the understanding of health among women. J Women's Health 1997;49–62.
- Centers for Disease Control and Prevention. Outbreak of Cyclosporiasis associated with snow peas—Pennsylvania, 2004. MMWR 2004;53:876–8.
- Rothman KJ. Causes. Am J Epidemiol 1976;104:587–92.
- Mindel A, Tenant-Flowers M. Natural history and management of early HIV infection. BMJ 2001;332:1290–93.
- Cobb S, Miller M, Wald N. On the estimation of the incubation period in malignant disease. J Chron Dis 1959;9:385–93.
- Leavitt JW. Typhoid Mary: captive to the public's health. Boston: Beacon Press; 1996.
- Remington PL, Hall WN, Davis IH, Herald A, Gunn RA. Airborne transmission of measles in a physician's office. JAMA 1985;253:1575–7.
- Kelsey JL, Thompson WD, Evans AS. Methods in observational epidemiology. New York: Oxford University Press; 1986. p. 216.
- Lee LA, Ostroff SM, McGee HB, Jonson DR, Downes FP, Cameron DN, et al. A. outbreak of shigellosis at an outdoor music festival. Am J Epidemiol 1991. 133:608–15.
- White DJ, Chang H-G, Benach JL, Bosler EM, Meldrum SC. Means RG, et al. Geographic spread and temporal increase of the Lyme diseas. epidemic. JAMA 1991;266:1230–6.
- Centers for Disease Control and Prevention. Outbreak of West Nile-Like Viral Encephalitis–New York, 1999. MMWR 1999;48(38):845–9.
- Centers for Disease Control and Prevention. Prevalence of overweight and obesity among adults with diagnosed diabetes — United States. 1988–1994 and 1999–2002. MMWR 2004;53(45):1066–8.
- National Center for Health Statistics [Internet]. Atlanta: Centers for Disease Control and Prevention [updated 2005 Feb 8]. Available from: http://www.cdc.gov/nchs/products/pubs/pubd/hestats/overwght99.htm.
|For more information on:||Visit the following websites:|
|CDC's Epidemic Intelligence Service||http://www.cdc.gov/eis/|
|CDC's framework for program evaluation in public health||http://www.cdc.gov/mmwr/preview/mmwrhtml/rr4811a1.htm|
|Updated Guidelines for Evaluating Public Health Surveillance Systems||http://www.cdc.gov/mmwr/preview/mmwrhtml/rr5013a1.htm|
|Case Definitions for Infectious Conditions Under Public Health Surveillance||http://www.cdc.gov/osels/ph_surveillance/nndss/casedef/|
- Page last reviewed: May 18, 2012
- Page last updated: May 18, 2012
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