In his day, Jungeblut was justly regarded as an important player in polio research. While recent revisionist history of the fight against polio has generally downplayed his contribution to the crusade, it has totally sidestepped what was arguably his most important discovery: that ascorbate is prevention and cure for polio.
Amazingly, Jungeblut first published this idea in 1935. His research on ascorbate was sweeping and profound, extending well beyond the topic of polio. In 1935, he also had shown that vitamin C inactivated diphtheria toxin. By 1937, Jungeblut demonstrated that ascorbate inactivated tetanus toxin.
John T. A. Ely, PhD, writes: "In the 1930's, the remarkable Claus W. Jungeblut, MD . . . first reported that ascorbic acid in concentrations, attainable in humans by a high intake, could inactivate and or protect against numerous viral and bacterial pathogens and their toxins. These include the polio, hepatitis and herpes viruses. . . One of (Jungeblut's) earliest research findings was ascorbic acid's ability to neutralize and render harmless many bacterial toxins, such as tetanus, diphtheria, and staph toxins."