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For more information, please see full course syllabus of Microbiology
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Human Host & Disease Transmission

  • Definition of Disease
    • Host susceptibility, infectious agent, transmission of agent to host
    • Non-random distribution of disease
  • Disease Transmission Modes and Examples
  • Clinical and Subclinical Disease
  • Occurrence of Disease
  • Measures of Infectious Disease Transmission
  • Disease Outbreaks
    • Food borne illness example: Salmonella saintpaul in 2008

Human Host & Disease Transmission

Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.

  • Intro 0:00
  • Human Host and Disease Transmission 0:19
    • Discuss the Basis of Human Disease
    • Non-random Distribution of Disease
    • Ways Disease are Transmitted
    • Occurrence of Disease
    • Measures of Disease Transmission
    • Disease Outbreaks
  • Basis of Human Disease 1:39
    • How Human Disease Arise
    • Host Must be Susceptible
    • Capacity to Infect
    • Environment
  • Non-Random Distribution of Disease 3:27
    • Genetic Predisposition
    • Nutrition
    • Immune Status
    • Socio-Economic Status
  • Modes of Disease Transmission 5:46
    • Direct Transmission
    • Indirect Transmission
  • Example of Disease Transmission 8:30
    • HIV/ AIDS
    • Hepatitis A,B,C
  • Clinical and Subclinical Disease 12:42
    • Clinical Disease
    • Subclinical Disease
    • Non Clinical Disease
    • Carrier Status
    • Carrier Status Example: Typhoid Mary
  • Occurrence of Disease 20:18
    • Endemic
    • Epidemic
    • Pandemic
  • Epidemic of Obesity 22:22
  • Measures of Infectious Disease Transmission 23:45
    • Incubation Period
    • Epidemic Curve
  • Disease Outbreaks 28:37
    • One Exposure, Common Vehicle
    • Outbreak Analysis
  • Food Borne Illness 34:06
    • 76 Million Cases of Food Borne Illness Per Year
    • Known Pathogens
    • 62 Million Cases from Unknown Agents
  • Example of Food Outbreak: Salmonella Saintpaul, 2008 35:34
  • Distribution of Outbreak Strain of Salmonella Found on Tomatoes and/or Jalapeno Peppers 36:21
  • Number of Persons Infected with Salmonella Saintpaul 38:10
  • Clinical Features of Salmonella Infection 40:47
    • Diarrhea
    • Abdominal Cramps
    • Identified by Stool Sample Culture
    • Severe Infection
  • Case-Control Studies of Salmonella Saintpaul Infection 42:26
  • Description of Outbreak Source Investigation 45:02
  • Example 1 46:25
  • Example 2 50:43
  • Example 3 53:13