Microbiology Basics

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Questions and Answers

What is the term for microorganisms that cause disease?

  • Bacteria
  • Microorganisms
  • Pathogens (correct)
  • Normal Flora

What is the term for the condition in which pathogens have multiplied and destroyed many cells in body tissue?

  • Contamination
  • Disease
  • Illness
  • Infection (correct)

What is the term for the technique that destroys more pathogens than medical asepsis?

  • Surgical Asepsis (correct)
  • Medical Asepsis
  • Sterile Technique
  • Clean Technique

What is the term for substances that threaten the health of living organisms?

<p>Biological Hazards (D)</p> Signup and view all the answers

What is the term for organisms that can directly cause human disease?

<p>Biological Agents (A)</p> Signup and view all the answers

What is the term for toxic or poisonous substances with a biological origin?

<p>Biotoxins (D)</p> Signup and view all the answers

What is the term for bacteria that are normally found in the body?

<p>Normal Flora (A)</p> Signup and view all the answers

What is the term for the technique of preventing the conditions that allow pathogens to live, multiply, and spread?

<p>Medical Asepsis (A)</p> Signup and view all the answers

What is the term for any substance that was produced by a living thing or was once a living thing?

<p>Organic Matter (B)</p> Signup and view all the answers

What is the term for disease-causing microorganisms that can be found on the skin and can cause infection if they enter the body?

<p>Normal Flora (A)</p> Signup and view all the answers

What is the primary concern associated with biting or stinging insects?

<p>Transmission of diseases (A)</p> Signup and view all the answers

What does the term 'Localized' refer to in the context of infections?

<p>Confined to one area (A)</p> Signup and view all the answers

What is the acronym SHARP used to remember?

<p>Characteristics of localized infection (C)</p> Signup and view all the answers

What is the term for an infectious disease that has spread to multiple countries and affected a large portion of the population?

<p>Pandemic (A)</p> Signup and view all the answers

What is the term for an infection acquired after admission to a healthcare facility?

<p>Nosocomial infection (C)</p> Signup and view all the answers

What is the primary concern associated with the ability of microorganisms to develop resistance to antibiotics?

<p>Reduced effectiveness of antibiotics (A)</p> Signup and view all the answers

Which of the following bacteria is resistant to Methicillin?

<p>Methicillin Resistant Staph aureus (B)</p> Signup and view all the answers

What is the primary mode of transmission of Clostridium difficile?

<p>Contact with contaminated surfaces (D)</p> Signup and view all the answers

What is the term for the highest level of exposure to a substance that a healthy person can tolerate without ill effects?

<p>Threshold limit values (C)</p> Signup and view all the answers

What is the primary concern associated with Vancomycin Resistant Enterococci (VRE)?

<p>Infection in individuals with compromised immune systems (D)</p> Signup and view all the answers

What is the primary mode of transmission for the bacteria resistant to all antibiotics, including vancomycin?

<p>Fecal-oral route (D)</p> Signup and view all the answers

What is the primary purpose of the Infection Prevention & Control Program?

<p>To prevent the spread of infections in healthcare facilities (A)</p> Signup and view all the answers

What is the most common acquired infection in healthcare facilities?

<p>Urinary tract infections (UTI) (C)</p> Signup and view all the answers

What is the primary method of diagnosing Tuberculosis?

<p>Mantoux test and sputum cultures for AFB (B)</p> Signup and view all the answers

What is the primary method of transmission for drug-resistant gram-negative bacteria?

<p>Direct contact (A)</p> Signup and view all the answers

What is the primary factor that contributes to the growth of microorganisms?

<p>All of the above (D)</p> Signup and view all the answers

What is the primary purpose of the infection cycle?

<p>To describe the process of infection transmission (B)</p> Signup and view all the answers

What is the primary mode of transmission for Hepatitis?

<p>Direct contact through body secretions (D)</p> Signup and view all the answers

What is the primary method of interrupting the infection cycle?

<p>Implementing infection control measures for each component of the infection cycle (D)</p> Signup and view all the answers

What is the primary reservoir host for infectious agents?

<p>Any of the above (D)</p> Signup and view all the answers

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Study Notes

Microorganisms and Infection

  • Microorganisms are living things that can only be seen through a microscope
  • Pathogens are disease-causing microorganisms
  • Bacteria are microorganisms that may or may not be pathogens
  • Normal Flora are bacteria normally found in the body
  • Infection is a condition in body tissue where pathogens have multiplied and destroyed many cells
  • Clean refers to being uncontaminated by harmful microorganisms
  • Dirty refers to being contaminated by harmful microorganisms
  • Asepsis is the absence of disease-causing organisms

Biological Hazards

  • Biological hazards are substances that threaten the health of living organisms
  • Examples of biological hazards include:
    • Biological agents (bacteria, viruses, parasites, fungi)
    • Biotoxins (toxic substances with a biological origin)
    • Animal waste and products
    • Organic matter (substance that used to be a living thing or was produced by a living thing)
    • Biting or stinging insects

Infection Control

  • Medical Asepsis is a technique that prevents the conditions that allow pathogens to live, multiply, and spread (also called clean technique)
  • Surgical Asepsis is a technique that destroys more pathogens than medical asepsis (also called sterile technique)
  • Normal flora can cause infection if it enters the body
  • Biological hazards can be prevented through Due Diligence (doing everything reasonable to protect health and safety)

Types of Infections

  • Localized infection: confined to one area, signs include swelling, redness, pain, loss of function, pus, and heat
  • Generalized infection: spread throughout the body, signs include increased temperature, lethargy, and generalized pain
  • Nosocomial Infection (HAI): infection acquired after admission to a health care facility
  • Endemic: an infectious disease that spreads throughout an area, community, or country
  • Outbreak: a more serious epidemic that has spread to a new area
  • Epidemic: a rapid spread of an infectious disease that affects a large portion of the population
  • Pandemic: a widespread epidemic that affects multiple countries and a large portion of the population

Diseases

  • Tuberculosis (TB): respiratory illness diagnosed by a Mantoux test and chest x-ray and sputum cultures for AFB (acid-fast bacilli)
  • Hepatitis: infection of the liver (Hep A, B, C)
  • HIV: Human Immunodeficiency Virus (AIDS)
  • Influenza
  • Childhood communicable diseases (chicken pox, Rubella, Measles, Mumps, Whooping Cough, Polio)

Infection Cycle

  • Infectious agent: any disease-causing organism (pathogen)
  • Reservoir Host: places in which microorganisms can thrive and reproduce
  • Portal of Exit: a place of exit for microorganisms to leave the reservoir
  • Route of Transmission: direct contact, air, insects, etc.
  • Portal of Entry: respiratory, gastrointestinal, urinary, and reproductive tracts
  • Susceptible Host: people with suppressed immune systems

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