National Toxicology Program

National Toxicology Program

Scientific Review of Merkel Cell Polyomavirus (MCV)

Listed in the Report on Carcinogens (RoC)
Fact Sheet: Five Viruses

Primary Uses or Exposures: MCV is a polyomavirus that infects the skin and healthy people continuously shed MCV from the skin surface throughout their lives. Close personal contact with saliva or skin may be how people are initially exposed to the virus during childhood.

Scientific Review Documents

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NTP is located at the National Institute of Environmental Health Sciences, part of the National Institutes of Health.