Medical!

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Across
  1. 3. reason of loss in air pressure or collapse
  2. 5. moving forward with force
  3. 6. unable to move and function
  4. 7. contaminate using a disease
Down
  1. 1. prohibit or move away
  2. 2. an insertion of a substance under pressure
  3. 3. a disease or virus spread causing many deaths
  4. 4. causing, being near death like ending point