COVID PUZZLE

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Across
  1. 4. spreads to many countries
  2. 8. This family of related microbes
  3. 9. In isolation
  4. 10. Not showing any symptoms
  5. 11. Disease originally was detected in animal
  6. 12. Keep away from others (6,10)
Down
  1. 1. Show signs of illness
  2. 2. A sudden increase
  3. 3. The body's ability to resist
  4. 5. Outbreak of this plague
  5. 6. definitely got it (9,4)
  6. 7. A machine that supplies oxygen