Then came Dr Jonas Salk, the virologist who developed the first successful polio vaccine which was made public in April 1955. Television personality, Edward R. Murrow, in a memorable interview asked Dr Salk: Who owned the patent to the polio vaccine? Without a patent, the Salk vaccine reached 90 countries by 1959. Together with Albert Sabin’s attenuated live oral polio vaccine being put to commercial use in 1961, domestic transmission of polio was completely eliminated in the US in a span of 25 years. Yong Tai Bhd signed an agreement with China-based Shenzhen Kangtai Biological Products Co Ltd to exclusively distribute KCONVAC Covid-19 vaccine in Malaysia.
