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Across
  1. 4. Infected but showing no symptoms.
  2. 7. The primary organ affected by COVID-19.
  3. 9. The city where COVID-19 was first identified.
  4. 12. The ability of a vaccine to prevent disease.
  5. 13. The disease caused by the coronavirus SARS-CoV-2.
  6. 14. The technology used in Pfizer and Moderna COVID-19 vaccines.
  7. 15. The state of being protected against infectious diseases.
  8. 16. The first mRNA vaccine approved in the United States.
  9. 17. Another common COVID-19 symptom.
  10. 20. Loss of this is a symptom of COVID-19.
  11. 22. A COVID-19 vaccine approved for single-dose administration.
  12. 23. A common symptom of COVID-19.
Down
  1. 1. A sensation of coldness often accompanied by shivering, common in COVID-19 cases.
  2. 2. The mRNA vaccine approved for individuals 18 and older on December 18, 2020.
  3. 3. Severe Acute Respiratory Syndrome; another illness caused by coronaviruses.
  4. 5. The part of the virus encoded by mRNA vaccines to trigger an immune response.
  5. 6. The period from infection to the onset of symptoms.
  6. 8. A structure used to deliver mRNA in vaccines.
  7. 10. A biological preparation that provides immunity to a specific disease.
  8. 11. A type of disease transmitted from animals to humans.
  9. 18. A condition falsely linked to vaccines in a discredited 1998 study.
  10. 19. A viral vector vaccine used for COVID-19.
  11. 21. Proteins produced by the immune system in response to vaccines.