epidemiologic triangle

Explain the role of the community health nurse (case finding, reporting, data collecting . Discuss the epidemiologic triangle as it relates to the communicable disease you have selected. Spell. This concept arose more than 60 years ago when George McNew, a plant pathologist at the Boyce Thompson Institute for Plant Research, diagrammed the fact that an epidemic arises from the interaction of three factors - a susceptible host, a virulent pathogen and a . It can help your students understand infectious diseases and how they spread. Descriptive epidemiology has the following characteristics (Choose the incorrect option): Selected Answer: A. The epidemiologic triangle consists of the host, the agent and the environment. Learn. 4- Role of the Community Health Nurse: Discussion of the role . To prepare for this Discussion, review Chapter . 1. In recent years it has been possible to carry out antigenic studies revealing variations in the strains of virus A, the agent in most major outbreaks. This chapter focuses on HIV, STDs, hepatitis, tuberculosis, and clinical signs thereof. Influenza is an important cause of outpatient medical visits and hospitalizations among young children. The burden of chronic HBV infection is increasingly being recognized, with cirrhosis and liver cancer attributable to HBV continuing . Host The agent infects the host, which is the organism that carries the disease. Theme One descriptions Allows comparisons by age, sex, and race" C. Allows causal inference from descriptive data "D. Uses case reports, case series, and cross-sectional studies" Flashcards. 4 In the context of COVID-19, the agentis the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), including the pathogenicity and virulence of various strains. According to the CDC (2012), the Host is the organism harboring the disease. Learn vocabulary, terms, and more with flashcards, games, and other study tools. This is the same technique that epidemiologists use when they are researching the outbreak of a disease. Chickenpox is a very contagious disease caused by the varicella-zoster virus. The Epidemiologic Triangle, sometimes referred to as the Epidemiologic Triad, is a tool that scientists use for addressing the three components that contribute to the spread of disease: an external agent, a susceptible host and an environment that brings the agent and host together. A number of models of disease causation have been proposed. Between the vertices, scientists will often describe the center of the triangle as representing time. The epidemiologic triangle because it relates to TB Three factors, which includes hosts, agents, plus environmental factors are usually a key component of infectious diseases. The Epidemiologic Triangle is a chart that scientists and other researchers can use to evaluate different diseases and follow their progression. Using the Epidemiologic Triangle. HIV affects the human immune system. These three questions create the "Epidemiologic Triangle" model, which is used to . It can help your students understand infectious diseases and how they spread. A visual description of the model and how the components of the model interact is included. However, BMI has low sensitivity and there is a large inter-individual variability in the percent body fat for any given BMI value, partly attributed to age, sex, and ethnicity. In order for the chain of transmission to occur, this process requires a source for the agent, a portal of exit, a mode of transmission and a portal of entry. The host is the organism that is capable of accepting and developing the disease. What is the epidemiological triangle? The triad consists of an external agent, a susceptible host, and an environment that brings the host and agent together. Symptoms can range from mild to severe and most commonly include profuse watery diarrhea, vomiting, weakness, and leg cramps. Tuberculosis (TB) is a bacterial disease acquired through airborne infection. Introduction and background information. Write. A traditional model of infectious disease causation, known as the Epidemiologic Triad is depicted in Figure 2. Humans are the host for influenza as they are the animal capable of full blown infection. After years of experiments, studies and research epidemiologist have determine that there are four factors that contribute to the occurrence of the disease. For injury, the agent is any one of the five forms of physical energy: kinetic or mechanical energy, chemical energy, thermal energy, electricity, and radiation. The natural history of disease is the course of the disease process from onset to resolution. Among the simplest of these is the epidemiologic triad or triangle, the traditional model for infectious disease. The agent is the microbe that causes the disease and the environment is those external factors that cause or allow disease transmission. The triad consists of an external agent, a host, and an environment in which host and agent are brought together, causing the disease to occur in the host. Step 1 of 4. mj_kelley. Epidemiological Triangle. The following explains the types of information that are routinely provided in the CDC's United States HIV surveillance reports and how the CDC utilizes these data. The triad consists of an external agent, a host, and an environment in which host and agent are brought together, causing the disease to occur in the host. Sudbury, MA: Jones and Bartlett Publishers. Social epidemiology is defined as the study of the distribution of health outcomes and their social determinants . Conversational Presenting. Epidemiologic triangle. The weaker a human's immune system, the more suitable a host for the virus. The Influenza virus (A, B and C) is the causative agent. Prezi. Lesson 1: Understanding the Epidemiologic Triangle through Infectious Diseases. Questions 1 - 5 are worth 1 point each and question 6 is worth 5 points. 1 Family Health International, Research Triangle Park, North Carolina 27709. The epidemiologic triangle consists of the interaction between an agent, a host, and the environment. Epidemiological Triangle of Influenza The epidemiological triangle of any contagious disease involves a host, a causative agent, and environment. An agent could be some form of bacteria, virus, fungus, or parasite. PMID: 8435997 DOI: 10.1016/0010-7824(93)90105-g Abstract Progestogen-only oral contraceptives (POCs) are generally considered a good contraceptive choice for brestfeeding women and for women who want to use an oral form of contraception, but are not suited for, or . For reasons that are not fully known, the virus can reactivate years later causing shingles. Education, behaviour change and clinical practices deal predominantly with the host, although multidisciplinary practices such as shared-care might also be expected to impact on . 1.2 - Epidemiologic Triad. Include the host factors, agent factors (presence or absence), and environmental factors. After a person recovers from chickenpox, the virus stays in the body in an inactive state. Discuss the epidemiologic triangle as it relates to the communicable disease you have selected. The Epidemiologic Triad A number of models of disease causation have been proposed. According to Maurer and Smith (2009), the epidemiological triangle comprises four parts: host, environment, agent, and time. The epidemiologic pyramid also serves as a practical model for guiding effective interventional measures. Epidemiology, therefore, refers to the study of that which befalls people or in short, the study of diseases in populations. Antigenicity of an infectious agent is measured by the secondary attack rate. Step-by-step solution. The epidemiologic triangle as it relates to TB Three factors, including hosts, agents, and environmental factors are a key component of infectious diseases. Abstract The epidemiological pattern of influenza over the past century is outlined; its vagaries are ascribed to the plasticity of the influenza virus. The epidemiological triad (hosts, agent/vectors and environments) has served us well in dealing with epidemics in the past, and may be worth re-evaluating to this end. Discuss the epidemiologic triangle as it relates to the communicable disease you have selected. The environmentrefers to extrinsic factors that . Epidemiology Triangle for AIDS in Alameda County by Ricky Cien. Agent, Environment and Susceptible host. Tuberculosis and Epidemiological Triangle Essay. The epidemiological triad (Figure) helps us understand the spread of diseases through 3components: agent, environment, and host. The knowledge is crucial as it facilitates learning of the . For instance, Asians have greater percent body fat than Caucasians . A traditional model of infectious disease causation, known as the Epidemiologic Triad is depicted in Figure 2. Gravity. Introduction. The WHO regions of South-East Asia and Africa accounted for nearly 70% of overall global TB. 4- Role of the Community Health Nurse: Discussion of the role . A vecto r, an organism that transmits infection by . Provides the basis for planning and evaluation of health services "B. The Epidemiologic Triangle The Epidemiologic Triangle is a model that scientists have developed for studying health problems. They are: The agent The host The environment Presentation Gallery. Lecture 1: Introduction to Epidemiology Outline The Epidemiologic Triangle I host I personal traits I behaviors I genetic predisposition I immunologic factors I. Tuberculosis is one of the communicable diseases that pose critical health concerns globally. Using the Epidemiologic Triangle. Cholera and the Epidemiology Triangle (HW 2.2) Directions: Use the CDC webpage to answer the following six questions about the Epidemiology Triangle (shown below). Among the simplest of these is the epidemiologic triad or triangle, the traditional model for infectious disease. Education, behaviour change and clinical practices deal predominantly with the host, although multidisciplinary practices such as shared-care might also be expected to impact on . The Epidemiologic Triangle is a model that scientists have developed for studying health problems. We often focus on the infectious organism, or agent, as the cause of infectious disease. 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