Basic Concepts of Infectious Disease

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Across
  1. 1. number of infectious particles required to cause active infection in 50% of population
  2. 2. diseases are infections of animals that can be transmitted to humans
  3. 3. disease is an epidemic that spreads worldwide
  4. 4. bacteria, virus, fungus, protozoan, or worm (helminth) that causes disease in humans
  5. 6. the entry of a pathogen into a living cell, where it then lives
  6. 7. occurs when a pathogen or parasite enters and begins to grow on the host.
  7. 9. disruption of the normal structure or function of any body part, organ, or system that can be recognized by a characteristic set of symptoms and signs.
  8. 10. a collection of signs and symptoms that occur together and collectively characterize a condition
  9. 13. collection of all microbes in/on the human body
  10. 14. can be observed by examination (objective marker of disease)
Down
  1. 1. the ability of a bacterial pathogen to spread rapidly through tissues
  2. 3. ability of the organism to cause disease
  3. 5. disease is one that is always present in a community at a low rate, often in an animal reservoir
  4. 8. dose that is lethal to 50% of the population
  5. 10. “issues” experienced by the person (subjective indicator of disease).
  6. 11. disease is one in which the number of cases increases in a community in a short time
  7. 12. the level of harm caused by a pathogen following infection