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Infection, Infectious Diseases, and Epidemiology: Core Concepts and Mechanisms

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Symbiotic Relationships

  • Symbiotic Relationships
    05:59

The Human Microbiome

  • The Human Microbiome
    03:25
  • Microbiome Promotes Immune Tolerance
    05:48
  • Microbiome Makes Nutrients & Aids in Host Digestion
    03:26

Reservoirs of Infection

  • Human Reservoirs: Carriers of Disease
    03:12
  • Reservoirs of Infection
    00:51
  • Non-Human Reservoirs
    02:36

Characteristics of Infectious Disease

  • Primary vs. Secondary Infections
    04:16
  • Communicable vs. Noncommunicable Diseases
    04:57
  • Intro to Characteristics of Infectious Disease
    05:09

Stages of Infectious Disease Progression

  • Stages of Infectious Disease Progression
    05:36
  • Chronic & Latent Infection Disease Progression
    05:14

Koch's Postulates

  • Koch's Postulates
    01:36
  • The 4 Koch's Postulates
    03:31
  • Limitations to Koch's Postulates
    02:58

Bacterial Pathogenesis

  • Intro to Bacterial Pathogenesis
    02:35
  • 1) Exposure to Pathogen
    03:27
  • 3) Invasion into Host Tissues
    05:38

Introduction to Pathogenic Toxins

  • Introduction to Pathogenic Toxins
    03:40

Exotoxins Cause Damage to the Host

  • 1) A-B Toxins
    04:44
  • Types of Exotoxins
    03:30
  • 3) Superantigens
    03:59

Endotoxin Causes Damage to the Host

  • Endotoxin
    02:46
  • Lipid A Causes Septic Shock
    03:24

Exotoxins vs. Endotoxin Review

  • Exotoxins vs. Endotoxin Review
    07:22

Introduction to Avoiding Host Defense Mechanisms

  • Introduction to Avoiding Host Defense Mechanisms
    01:59

1) Hide Within Host Cells

  • Hide Within Host Cells
    01:50

2) Avoiding Phagocytosis

  • Pathogen Use Capsules & M Proteins to Avoid Opsonization
    05:25
  • Pathogens Avoid Encounter with Phagocytes
    05:13
  • Pathogens Use Fc Receptors to Prevent Opsonization
    03:48

3) Surviving Inside Phagocytic Cells

  • Surviving Inside Phagocytic Cells
    04:18

4) Avoiding Complement System

  • Avoiding Complement System
    04:53

5) Avoiding Antibodies

  • Bacteria Avoid Antibodies by Producing IgA Proteases
    02:59
  • Bacteria Avoid Immune System by Mimicking Host Molecules
    03:11
  • Intro to Avoiding Antibodies
    01:35

Biofilms

  • Quorum Sensing
    04:13
  • Steps of Biofilm Development
    04:32
  • Biofilms
    03:14

Introduction to Chain of Infection

  • Map of the Lesson on Chain of Infection
    00:46
  • Introduction to Chain of Infection
    03:15

Disease Transmission

  • Disease Transmission
    01:24
  • Vertical vs. Horizontal Disease Transmission
    02:32

Horizontal Disease Transmission

  • Horizontal Disease Transmission Example 1
    01:53
  • Zoonoses vs. Vector-Borne Transmission
    03:52
  • Indirect Transmission
    04:42

Colonization of Susceptible Host

  • Colonization of Susceptible Host
    01:02
  • Successful Colonization Depends on Entry Point
    03:01

Factors Influencing Epidemiology

  • Factors Influencing Epidemiology
    03:26
  • Herd Immunity
    04:05

Emerging Infectious Diseases

  • Emerging Infectious Diseases Example 1
    02:11
  • Factors Contributing to Emerging & Re-Emerging Infectious Diseases
    03:21
  • Emerging & Re-Emerging Infectious Diseases
    03:15

Healthcare-Associated Infections

  • Risk Factors Contributing to HAIs
    02:45
  • Healthcare-Associated Infections
    01:33
  • Preventing HAIs
    01:59

Epidemiological Studies

  • Types of Epidemiological Studies
    05:00