Whose invention led to the development of the polio vaccine?
Show answer & explanation
Correct answer: D
Explanation
The correct option is option 4 i.e. Jonas Salk.
| Jonas Salk | Jonas Edward Salk was an American virologist and medical researcher who developed one of the first successful polio vaccines. |
| On March 26, 1953, American medical researcher Dr Jonas Salk announces on a national radio show that he has successfully tested a vaccine against poliomyelitis, the virus that causes the crippling disease of polio. | |
| The poliovirus spreads most often from faecal-oral contact. Usually, this occurs from poor hand washing or from consumption of contaminated food or water. |