Infectious Disease Concepts and Immunity
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Infectious Disease Concepts and Immunity

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Questions and Answers

Which term describes the measure of disease occurrence in a population at a specific time?

  • Attack Rate
  • Infectivity
  • Prevalence (correct)
  • Cohort Study
  • What is the primary role of a reservoir in the context of infectious agents?

  • To eliminate pathogens from an environment
  • To enhance the infectivity of pathogens
  • To transmit pathogens to susceptible hosts
  • To serve as a host for the agent (correct)
  • Which term best describes an individual who can transmit a pathogen during its incubation period?

  • Convalescent Carrier
  • Fomite
  • Susceptible Host
  • Incubatory Carrier (correct)
  • Which of the following is NOT classified as an arthropod vector?

    <p>Rats</p> Signup and view all the answers

    What is the formula for calculating the attack rate in a population?

    <p>Sick people divided by exposed people</p> Signup and view all the answers

    Which of the following represents an example of artificial passive immunity?

    <p>Antivenom administration</p> Signup and view all the answers

    Which type of carrier is someone who has recovered from an illness but can still spread it?

    <p>Convalescent Carrier</p> Signup and view all the answers

    What component of the cycle of transmission refers to how an agent exits the reservoir?

    <p>Portal of exit</p> Signup and view all the answers

    What does the term secondary prevention primarily focus on?

    <p>Detecting and treating diseases early</p> Signup and view all the answers

    Which phase of epidemiology focuses on linking illnesses to environmental factors?

    <p>Sanitary Phase</p> Signup and view all the answers

    How can the chain of infection be interrupted?

    <p>By reducing the susceptibility of the host</p> Signup and view all the answers

    Which of the following represents a leading cause of death?

    <p>Heart Disease</p> Signup and view all the answers

    What is emphasized by the Ecological Model in epidemiology?

    <p>Person, Place, and Time</p> Signup and view all the answers

    Which of the following is an example of passive immunity?

    <p>Breastfeeding</p> Signup and view all the answers

    What is the primary goal of tertiary prevention?

    <p>Manage long-term health issues</p> Signup and view all the answers

    Which of the following is not considered an environmental risk factor?

    <p>Genetic factors</p> Signup and view all the answers

    What are the three major components of the Ecological Model?

    <p>Design health promotion, Epidemiology Tools, Life Expectancy</p> Signup and view all the answers

    Which of the following is an example of direct exposure?

    <p>Fleas and Ticks</p> Signup and view all the answers

    What type of prevention targets individuals at high risk for developing extensive problems?

    <p>Indicated Prevention</p> Signup and view all the answers

    Which of the following substances is classified as a stimulant?

    <p>Cocaine</p> Signup and view all the answers

    What are the three types of risk factors associated with health issues?

    <p>Behavioral, Environmental, Genetic</p> Signup and view all the answers

    Which prevention strategy is aimed at large groups not currently afflicted by a problem?

    <p>Universal Prevention</p> Signup and view all the answers

    What type of drug depresses the central nervous system?

    <p>Valium</p> Signup and view all the answers

    Which category do substances like glue and aerosol cans fall under?

    <p>Inhalants</p> Signup and view all the answers

    Which age group is particularly affected by balance issues and slower metabolism associated with drinking?

    <p>The Elderly</p> Signup and view all the answers

    Which legal substance is responsible for more than half of its user deaths?

    <p>Tobacco</p> Signup and view all the answers

    What is a common deterrent that prevents individuals from seeking treatment for substance use?

    <p>Stigmatization</p> Signup and view all the answers

    What percentage of youth and young adults reported drug use in 2021?

    <p>13.8%</p> Signup and view all the answers

    Which of the following is NOT one of the top three causes of unintentional injuries?

    <p>Drowning</p> Signup and view all the answers

    What type of violence occurs between individuals?

    <p>Interpersonal violence</p> Signup and view all the answers

    What does the Haddon Matrix address in relation to injury prevention?

    <p>Host, agent, and environment</p> Signup and view all the answers

    Which of the following is an example of community violence?

    <p>Stranger violence</p> Signup and view all the answers

    Which of the following is a primary intervention to prevent drowning?

    <p>Fencing</p> Signup and view all the answers

    What is a behavioral risk factor that increases the likelihood of motor vehicle accidents?

    <p>Texting and driving</p> Signup and view all the answers

    What age group is most commonly associated with poisoning incidents?

    <p>Children under 6</p> Signup and view all the answers

    Which of the following methods can help prevent pediatric poisonings?

    <p>Proper disposal of medications</p> Signup and view all the answers

    Which factor is NOT considered a risk factor for drowning?

    <p>High swimming capability</p> Signup and view all the answers

    What is a crucial prevention method for community violence?

    <p>Providing conflict resolution training</p> Signup and view all the answers

    What is one critical action to support someone experiencing partner violence?

    <p>Creating a safety plan</p> Signup and view all the answers

    Which of the following is NOT a method to prevent falls?

    <p>Removing furniture from homes</p> Signup and view all the answers

    Study Notes

    Prevalence and Attack Rate

    • Prevalence is the number or proportion of cases of a particular disease or condition present in a population at any given time.
    • Prevalence is calculated by dividing the number of new cases by the number of cases within the year.
    • Attack rate is the percentage of people who become ill in a population after exposure.
    • Attack rate is calculated by dividing the number of sick people by the number of exposed people.

    Chain of Infection

    • The chain of infection describes the process of how an infectious agent spreads from one person to another.
    • The chain of infection consists of six links: agent, reservoir, portal of exit, mode of transmission, portal of entry, and susceptible host.
    • The chain of infection can be broken by reducing the susceptibility of the host, such as through vaccination, handwashing, and laws and regulations.

    Types of Immunity

    • Artificial passive immunity is immunity that results from the administration of antibodies from another animal against a dangerous pathogen.
    • Examples of artificial passive immunity include antivenom and administering antibodies from another person.
    • Passive immunity is immunity that is acquired by receiving pre-formed antibodies.
    • Passive immunity can be natural, such as through breastfeeding, or artificial.
    • Active immunity is immunity that is acquired through exposure to an antigen or vaccination.

    Phases of the Ecological Model

    • The ecological model is a framework for understanding the factors that influence health behaviors.
    • The ecological model emphasizes the importance of multiple levels of influence, including individual, interpersonal, organizational, community, and policy levels.
    • The ecological model can be used to design health promotion interventions that target multiple levels of influence.

    Preventing Injuries

    • The Haddon Matrix is a method to generate ideas about injury prevention that address the host, agent, and environment and their impact in the pre-event, event, and post-event phases of the injury process.
    • The Haddon Matrix was originally designed for motor vehicle accidents.
    • Primary prevention involves promoting healthy lifestyles through immunizations, encouraging exercise, and healthy nutrition.
    • Secondary prevention involves detecting and treating diseases early.
    • Tertiary prevention involves reducing the impact of a disease that is already in place.

    Substance Abuse

    • Stimulants stimulate the central nervous system.
    • Examples of stimulants include cocaine, methamphetamine, nicotine, and Ritalin.
    • Depressants depress the central nervous system.
    • Examples of depressants include alcohol, barbiturates, Valium, Xanax, Prozac, and Thorazine.
    • Inhalants are substances that are inhaled to produce mind-altering effects.
    • Examples of inhalants include butyl nitrite, amyl nitrite, aerosol cans, glue, vapors, and pens.
    • Narcotics are drugs that have a sedative effect.
    • Examples of narcotics include Vicodin, Oxycontin, opium, morphine, methadone, meperidine, and heroin.
    • Hallucinogens result in altered perception of reality.
    • Examples of hallucinogens include LSD, PCP, psilocybin mushrooms, and peyote.

    Leading Causes of Death

    • The leading causes of death in the United States are heart disease, cancer, COVID-19, and accidents.
    • The elderly are at higher risk for alcohol-related problems, including falls and slower metabolism.
    • Tobacco is the most legal substance that contributes to more than half of its user deaths.
    • Adolescents are the growing population that uses tobacco, making them a target audience for tobacco use reduction and vaping.

    Unintentional injuries

    • The top 3 causes of unintentional injuries, according to the CDC, are poisoning, falls, and motor vehicle accidents.
    • The top 2 causes of intentional injuries, according to the CDC, are homicide and suicide.
    • Gun laws can affect the number of homicides and suicides.
    • The LGBTQ+ community, homeless people, migrants, prisoners, veterans, and refugees are all at risk for intentional injuries.

    Preventing Drowning

    • Primary interventions to prevent drowning include fencing pools, swimming lessons, and supervision.
    • Secondary interventions to prevent drowning include making sure families know CPR.
    • Risk factors for drowning include ages 1-4, ethnic groups, males, alcohol, lack of barriers and ability to swim, failures to wear life jackets, seizure disorder, and lack of supervision.

    Violence

    • Interpersonal violence occurs between two people.
    • Family violence is emotional, physical, or sexual abuse of one family member by another.
    • Examples of family violence include child abuse, partner abuse, and elder abuse.
    • Community violence includes stranger violence and gang violence.
    • Collective violence occurs when there is war between two nations or groups.
    • Examples of collective violence include rape, terrorism, and gang war.
    • The four types of violence are neglect, psychological, physical, and sexual.
    • A priority action for someone experiencing partner violence is to create a safety plan.
    • Prevention methods for partner violence include community support groups, training for law enforcement and healthcare professionals, and making sure women are provided access to safety.
    • Prevention methods for community violence include providing better employment opportunities, job fairs, and conflict resolution.

    Preventing Poisonings

    • The top five poison exposures are cosmetics, personal care products, household products, medications, and homeopathic medications.
    • Prevention methods for preventing poisonings include not sharing medications, labeling medications, proper disposal of medications, avoiding button batteries, and avoiding pesticides.
    • Children under the age of six account for most poisonings.

    Child Maltreatment

    • Risk factors for child maltreatment include being younger than 4, being a part of the LGBTQ+ community, and having special needs that increase caregiver burden.

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    CH Exam 3.4 PDF

    Description

    This quiz covers key concepts related to infectious diseases, including prevalence, attack rate, and the chain of infection. It also addresses types of immunity, providing a comprehensive overview of how infections spread and how immunity can be developed or enhanced. Test your understanding of these crucial public health fundamentals!

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