IT Insights Blog — Ghostbusters
Posted by TestOut Staff on
In 1955, after years of study and testing, virologist Jonas Salk announced a successful polio vaccine. Across the United States, in the four years immediately preceding the release of Salk's vaccine, polio caused paralysis in more than 16,000 patients and killed nearly 1,900 patients every year. Today there are fewer than 10 documented cases of polio per year.