crossword for health

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Across
  1. 5. who developed an oral live-virus polio vaccine in the mid 1950s
  2. 6. Training for the Medical field is called what?
  3. 7. A type of technology that uses radiation called electromagnetic waves to give a clear view of the skeleton.
Down
  1. 1. is a disease caused by a virus that is spread through mosquito bites.
  2. 2. The first successful heart transplant was performed in 1968 by who?
  3. 3. were discovered in 1928 and since then more have been discovered.
  4. 4. A virus that may cause paralysis and is easily preventable by the polio vaccine.