herd immunity

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Across
  1. 2. immunity, defined as the resistance of a population to infectious disease due to the high level of vaccinated or immune individuals in that population.
  2. 5. period of time.
  3. 8. disease, A disease that is easily spread from one person to another.
  4. 9. The ability to ward off diseases through innate and adaptive immunity.
  5. 11. The lack of resistance to a disease.
  6. 12. An epidemic that occurs worldwide.
  7. 13. the percentage of vaccinated people required to achieve herd immunity in a population.
  8. 15. A disease that occurs occasionally in a population.
Down
  1. 1. The fraction of a population having a specific disease at a given time.
  2. 3. A disease acquired by many hosts in a given area in a short
  3. 4. The fraction of the population that contracts a disease during a
  4. 6. the number of deaths from these diseases.
  5. 7. the incidence of specific notifiable diseases.
  6. 10. A continual source of infection.
  7. 14. A disease that is constantly present in a certain population.