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5 Written questions

5 Matching questions

  1. herd immunity
  2. antigen
  3. vector competence
  4. vector
  5. prospective study
  1. a any substance (as a toxin or enzyme) that stimulates the production of antibodies
  2. b ability of a vector to acquire a pathogen and to successfully transmit it to another susceptible host
  3. c data collected in the future from groups sharing common factors
  4. d Immunity in most of a population
  5. e organism that carries pathogens from person to person

5 Multiple choice questions

  1. long term or permanent damage to the host long after the disease leaves the host
  2. a toxin that is confined inside the microorganisms and is released only when the microorganisms are broken down or die
  3. a population survey using serologic test to screen for exposure and immunity to an infectious disease
  4. relating to the stage in the development of a disease before the symptoms are observed
  5. An individual capable of transmitting an infectious agent to others during the incubation period of the disease.

5 True/False questions

  1. pandemicany disease-producing agent (especially a virus or bacterium or other microorganism)


  2. attack ratereduced in strength


  3. prevalenceextreme harmfulness (as the capacity of a microorganism to cause disease)


  4. risk factor•natural substance normally found present in the stomach essential to the metabolism of vitamin B 12 .


  5. pathogenany disease-producing agent (especially a virus or bacterium or other microorganism)