Charles Weissmann (born 14 October 1931) is a Hungarian-Swiss molecular biologist. Weissmann is particularly known for the first cloning and expression of interferon and his contributions to the unraveling of the molecular genetics of neurogenerative prion diseases such as scrapie, Creutzfeldt–Jakob disease and "mad cow disease".

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Charles Weissmann
Weissmann in 1982
Born	(1931-10-14) 14 October 1931 (age 92)
Alma mater	University of Zurich

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Weissmann went to University of Zurich and obtained his MD in 1956 and Ph.D. in Organic Chemistry in 1961. In 1978, Weissmann co-founded the biotech company Biogen in Geneva. Biogen is considered one of the pioneers of the biotechnology industries. Weissmann was director of the Institute for Molecular Biology in Zurich, President of the Roche Research Foundation and co-founder and Member of the Scientific Council of Biogen. He was Chairman of the Department of Infectology, Scripps Florida until 2011.

Weissmann won several awards, including the Otto Warburg Medal (1980) and the Scheele Award (1982). A member of the American Society of Biological Chemistry and the Deutsche Akademie der Naturforscher Leopoldina he is also a Foreign Associate of the U.S. National Academy of Sciences, the Royal Society (UK) and the Pour le Mérite (Germany). On 16 May 2011 Weissmann became Doctor of Science Honoris Causa at New York University.

• Sir Hans Krebs Medal (1974).
• Otto Warburg Medal (1980).
• Scheele Award (1982).
• Wilhelm Exner Medal (1996).^[1]
• Max Delbrück Medal (1997)
• Mendel Medal (1998)