Health Scientist: Dr. Jonas Salk

Dr. Salk is an American scientist who discovered the vaccine against a crippling disease called poliomyelitis. He was one of the team of doctors who worked on a project that aimed to identify the virus that causes polio. The team discovered three main types of polio virus. Dr. Salk tested them in his laboratory and developed the vaccine that helped prevent the crippling disease-polio vaccine.

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