Covid Crossword

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Across
  1. 3. feeling of tiredness or low energy
  2. 5. country with strict Covid-19 measures
  3. 7. additional dose of vaccine to strengthen immunity
  4. 8. Original covid variant from Britain
  5. 10. Most infectious variant, but less deathly?
Down
  1. 1. Symptoms of covid and it's variants are similar to what?
  2. 2. what we get to help produce antibodies against a disease or virus
  3. 4. What do we go on when covid cases keep going up
  4. 6. virus where symptoms of cough and loss of smell are less common
  5. 9. an outbreak of a disease