Which types of molluscum contagiosum virus cause infection in humans?

Updated: Aug 09, 2018
  • Author: Ashish C Bhatia, MD, FAAD, FACMS; Chief Editor: Dirk M Elston, MD  more...
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Humans are the host for the following 3 types of molluscum contagiosum virus:

  • Orthopoxvirus - This resembles variola (smallpox) and vaccinia, which are ovoid (300 x 250 nm)

  • Parapoxvirus - These are orf and milker’s nodule viruses, which are cylindrical (260 x 160 nm)

  • Unclassified (with features that are intermediate between those of the orthopox and parapox groups) - These are intermediate in structure (275 X 200 nm); they include molluscum contagiosum virus and tanapox

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