Igor J. Koralnik
physician, neurologist and scientist from the United States
Igor Koralnik is an American physician, neurologist and scientist. He is one of the first physicians to study the neurologic complications caused by the human immunodeficiency virus (HIV) and is a leading researcher in the investigation of the polyomavirus JC (JC virus), which causes progressive multifocal leukoencephalopathy (PML), a disease of the central nervous system that occurs in immunosuppressed individuals.
Education and training
Koralnik was born in Geneva, Switzerland on July 20, 1962. He moved to the United States in 1990 and became a naturalized U.S. citizen. He received his medical degree at the University of Geneva Medical School, Switzerland, in 1987. While a medical student, he became interested in a new disease – acquired immune deficiency syndrome (AIDS).
Koralnik's doctoral dissertation focused on the early neurological complications of AIDS. He used magnetic resonance imaging, electroencephalography and other electrophysiologic diagnostic technology to track damage to the brain and nerve cells. He continued these studies during his internship and residency in Internal medicine at Geneva University Hospital, under the mentorship of Dr. Bernard Hirschel. This work formed the basis of a 1990 article, which Koralnik lead-authored, in the New England Journal of Medicine, and it won him a 1991 award from the Swiss Society of Internal Medicine.
The public source identifies “Igor J. Koralnik” as physician, neurologist and scientist from the United States. This brief keeps that definition visible, then builds a research path around Igor, Koralnik and physician.
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Biographical claims are most persuasive when dates, appointments and relationships can be traced to records created close to the events described. The source revision retrieved here is dated Aug 31, 2026. The linked authority identifier is Q28132543. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1962, 1990, 1987 and 1991.
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This entry incorporates text from “Igor J. Koralnik” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.