Jonas Salk (October 28, 1914 - June 23, 1995) is the discoverer/inventor of the eponymousSalk vaccine (see polio vaccine). This was one of the first successful attempts at immunization against a virus, specifically the Poliomyelitis virus. The vaccine provides the recipient with immunity against Polio, and was seminal in the near eradication of a once widely-feared disease.
... 65 years of age or older. The median age is 34 years. For every 100 females there are 102.8 males. For every 100 females age 18 and over, there are 100.6 males.
Th ...