Health

• Communicable Diseases


  Are illnesses sourced from pathogens which spread from living things to another.
• Pathogen


  A biological agent that causes disease or illness to it's host.
• Bacteria


  Microscopic pathogens that reproduce rapidly after entering the body.
• Smallest known pathogen infecting cells of biological organisms

  Virus
• Tiny single-celled organisms producing toxins

  Protozoa
• Typhus


  A disease we cannot get from a bacteria
• These are microbial organisms with the ability to cause diseases. These refer to bacteria, virus, fungi and parasites

  Infectious Agent
• An individual who cannot resist a microorganism invading the body, multiplying and resulting in infection

  Susceptible Host
• The stage in which the recovery process is complete. The host may experience relapse or being sick again.

  Recovery Stage
• The stage refers to a person who has been affected by conditions in the past and is affected with the same disease again.

  Relapse Stage
• These reactions include discharge, slight fever, headache, watery eyes, runny nose, tiredness, and irritability.

  Prodromal Stage
• Phase when host feels improved but might or might not feel like doing normal activites.

  Decline Stage
• Reservoirs


  Can be a place such as bodies of water, animals , and humans.
• What is another word for Recovery Stage

  Convalescence Stage
• Incubation Stage


  The period between initial infection to and appearance of symptoms
• Portal of Exits


  Providing a way for a microorganisms to leave the resevoir.
• Stages of Infection

  Pathogen

  Reservoir

  Portal of Exit

  Mode of Transmission

  Portal of Entry

  Susceptible Host

  
• Rickettsia


  Grows inside living cells and resenbles bacteria