![]() Cutter Laboratories in California, one of the main producers of the vaccine, inoculated more than 200,000 children in 1955, and within days there were reports of paralysis. The first big batch of vaccine wasn’t properly made. Alas, this happy ending comes with an asterisk. The country scrambled to produce and disseminate the vaccine as quickly as possible. Ta-da! It cut the risk of infection in half. ![]() But it was recognizable enough for the immune system to pick it up. His vaccine weakened the poliovirus with formaldehyde and mineral water. “The answer to the polio mystery, also well known, came from Jonas Salk, who was born in New York City of Russian Jewish immigrant parents and eventually was appointed director of the Virus Research Laboratory at the University of Pittsburgh School of Medicine (by way of New York University and Michigan). ![]()
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