Immunization Crossword

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Across
  1. 4. What protects the human body from pathogens?
  2. 7. Defend your body against pathogens
Down
  1. 1. Protection from a certain disease
  2. 2. Used to help the immune system protect against disease
  3. 3. What is the recommended age for getting the flu vaccine?
  4. 5. Symptoms caused from receiving medication; they usually go away on their own and usually don't do serious harm
  5. 6. A disease-causing microorganism