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By Mayo Clinic staffMolluscum contagiosum results from an infection by the molluscum contagiosum virus — a member of the poxvirus family.
This virus spreads easily through direct skin-to-skin contact and through contact with contaminated objects, such as toys, doorknobs and faucet handles. The virus also spreads through sexual contact with an affected partner. Scratching or rubbing the papules spreads the virus to nearby skin, as can shaving.