Jonas Salk is known for the discovery of-

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Polio vaccine. Jonas Edward Salk was American physician and medical researcher who developed the first safe and effective vaccine for polio whereas live attenuated (weakened) oral polio vaccine (OPV) was developed by Dr. Albert Sabin and first used in 1961.Polio is the common name for poliomyelitis. Polio is caused by one of three types of poliovirus (which are members of the Enterovirus genus). These viruses spread through contact between people, by nasal and oral secretions, and by contact with contaminated faeces. Polio attacks nerve cells.

Jonas Salk is known for the discovery of-

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