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When epidemiologists are working to track a disease, the three elements that the

When epidemiologists are working to track a disease the three elements that they focus on aretheagent thehost andtheenvironment.Followingare explanations ofeach element. Theagentiswhat causesthe disease.Theagentis often a virus or bacteria but can also be caused by otheragents. In the scenario described in theIntroduction theagentis theE.colibacteria. Thehostrefers to those who are contracting the disease. Thehostdoesnt necessarily become sick.Hostscan serve as carriers of the disease who do not show outward signs or symptoms. Finally theenvironmentrefers to the external factors that support or cause the disease to spread. In the E. coli scenario the lettuce became infected either at the farm or during transport;the lettuce was sold to the distributorand then to Sams Sandwich trucks;and people ate the lettuce on these sandwiches. Each of these steps is important to tracking the disease and epidemiologists work diligently to trace and report each of the steps to prevent further transmission of the disease. The following is an example of an epidemiologic triad. Agent:Salmonellabacteria Keep in mind that agents can be biologic (e.g. bacteria or viruses) chemical (e.g. poisons or alcohol) physical (e.g. trauma or radiation) or nutritional (e.g. a lack or excess of essential nutrients). Host factors:Individualswho are particularly vulnerable (e.g. the very young or very old and immunocompromised individuals). Note that in general host characteristics can include age sex race religion customs occupation genetic factors other health factors and immunologic status. Environmental factors:Contaminatedkitchen surfaces or utensils undercooking of contaminated food items or contaminated chicken. Environmental factors can include temperature crowding noise pollution food and radiation. Changes in one factor in the epidemiological triad can influence the occurrence of disease by increasing or decreasing a persons risk for disease. Consider how variations in each factor shown in the example can influence the manifestation of disease.Refer to pages 435-440 in your Friisand Sellers(2021) textbook for further explanation. In this Discussion you will apply the epidemiologic triad to a disease of your choiceto gain a better understanding of both the model and the disease. To prepareu202ffor this Discussion: Access and review theEpidemiological Triad Learning Interaction. Select an infectious disease from the list proved inList of Infectious Diseasesdocumentfor Week 1 Discussion. Review the Week 1Ebola Virus Disease in the Light of Epidemiological Triad (Kaur Sachdeva Jha &Sulania 2017)resource. Consider how the epidemiologic triad/triangle can be applied to your selected disease. Consider how variations in each factor shown in the examplefrom the textbookcan influence the manifestation ofthedisease. Refer to pages 435-440 in your textbook for further explanation. By Day 4 Posta comprehensive explanationofthe following: Identify ebola virus disease Followingare explanations ofeach element. Provide an example of an agent that is associated with theinfectiousdiseasethatyou selected. Discussu202fat least threeu202fexamples of environmental factors that contribute to the likelihood of transmission of theagent to an individualfor the disease you have selected. Discussu202fat least threeu202fexamples of host factors that contribute to the likelihood of transmission of theagent to an individualfor the disease you have selected.

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