Covid Puzzler

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Across
  1. 4. Number of country categories
  2. 5. System used for samples
  3. 7. How many seconds for a throat swab
  4. 8. Always worn in public
Down
  1. 1. Location before Hebron
  2. 2. Swab for an under 13
  3. 3. Weekly work pattern
  4. 6. Employer