herd immunity

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Across
  1. 2. The ability to ward off diseases through innate and adaptive immunity.
  2. 4. A continual source of infection.
  3. 5. immunity, defined as the resistance of a population to infectious disease due to the high level of vaccinated or immune individuals in that population.
  4. 6. The fraction of a population having a specific disease at a given time.
  5. 8. The lack of resistance to a disease.
  6. 9. period of time.
Down
  1. 1. The fraction of the population that contracts a disease during a
  2. 3. the percentage of vaccinated people required to achieve herd immunity in a population.
  3. 7. disease, A disease that is easily spread from one person to another.