Covid-19

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Across
  1. 3. a drug for the treatment or prevention of disease.
  2. 5. an infective nucleic acid molecule in a protein coat.
  3. 8. a period, of isolation in which people that have arrived from elsewhere or been exposed to infectious disease are found.
Down
  1. 1. a substance used to stimulate the production of antibodies and provide immunity against one or several diseases.
  2. 2. a colorless, transparent, odorless liquid that forms the seas, lakes, rivers, and rain and is the basis of the fluids of living organisms.
  3. 4. a person who is qualified to treat people who are ill.
  4. 6. a vehicle equipped for taking sick or injured people to and from hospital, especially in emergencies.
  5. 7. the process of infecting or the state of being infected.