unit_5-1 (1).pptx - Infectious Diseases Unit 5 5.1 Key...

This preview shows page 1 - 12 out of 67 pages.

Infectious Diseases Unit 5
Image of page 1

Subscribe to view the full document.

5.1 Key Terms & Essential Questions Antibody Aseptic Technique Bacillus Bacteria B Lymphocyte (B Cell) Coccus Contagious Fungus Gram Stain Helminthes Immunity Infection Microbiology Phagocyte Prion Protozoan Spirillum T Lymphocyte (T Cells) Transmission Virus 1. How are infectious diseases spread through a population? 2. What is aseptic technique? 3. How can an unknown sample of bacteria be identified? 4. How does the immune system function to protect the human body from foreign invaders?
Image of page 2
5.1.1 Contagious: Are you patient zero?
Image of page 3

Subscribe to view the full document.

Outbreak: Anatomy of an epidemic
Image of page 4
Infection & Disease Pathogen- infectious agent responsible for disease Infection- pathogen invades and begins growing within a host Disease- occurs if and when the invasion and growth of a pathogen impair bodily functions To cause disease pathogens must 1. Enter the host body 2. Adhere to specific cells 3. Invade and colonize tissues 4. Inflict damage
Image of page 5

Subscribe to view the full document.

Enter through openings to the body: mouth, eyes, nose, genital openings, breaks in the skin Cause disease by Destroying cells of infected organisms by breaking the cells down for food Releases toxins (poisons) which destroy cells of infected organism Must have access to new hosts to spread
Image of page 6
Highly contagious and virulent Infectious agents that are easily transmitted Contagious Infectious agents that are very likely to cause disease once transmitted Virulent Highly contagious and virulent The most troublesome infectious agents
Image of page 7

Subscribe to view the full document.

Infectious diseases Caused by the entrance and reproduction of an infectious agent in a body Bacteria or virus The medical examiner who performed Anna Garcia’s autopsy pulled copies of Anna’s medical records before proceeding with the autopsy. Interestingly, the medical examiner discovered that Anna had been hospitalized just ten days prior to her death for a sickle cell crisis and subsequently was treated for an infection that was most likely acquired during her hospital stay. The medical examiner then noted that a page of the medical history is missing. Throughout this lesson, YOU will play the role of medical detectives in order to investigate Anna’s mystery infection. Ultimately, YOU will need to identify the exact pathogen, or infectious agent, responsible for Anna’s illness.
Image of page 8
Influenza Outbreak (1918-1919) Death and Devastation Deadliest in modern history More died from the flu than from World War I More than 25% of the U.S. population became sick 675,000 Americans died during the pandemic All age groups were affected, not just the young and elderly
Image of page 9

Subscribe to view the full document.

Spread of the Disease First observed in Europe, the U.S. and parts of Asia Swiftly spread around the world Highest impact was along shipping and trade routes Spread quickly due to worldwide travel of troops returning from WW1 Estimates put the worldwide death toll at 21,642,274
Image of page 10
Cause of Death Extensive hemorrhaging in the lungs Patients literally drowned in fluids Researchers later discovered what
Image of page 11

Subscribe to view the full document.

Image of page 12

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern

Ask Expert Tutors You can ask 0 bonus questions You can ask 0 questions (0 expire soon) You can ask 0 questions (will expire )
Answers in as fast as 15 minutes